We obsessively cover the auto industry…

It's going to be a while before we've figured out our brave new marijuana-approved world. The next lesson comes courtesy of the Michigan Supreme Court, which has reportedly ruled that it isn't necessarily against the law for a medical marijuana user to drive with the drug in their system. The ruling comes after motorist Rodney Koon was busted for doing 83 miles per hour in a 55-mph zone and tested positive for "internal possession of marijuana."

Koon said it had been at least six hours since he "used his medicine," and the blood test registered 10 nanograms per milliliter of the active ingredient in marijuana, THC. The 86th District Court in Grand Traverse County, MI – the county where Koon was caught – ruled that it took five times that amount to declare a person stoned.

But that was the ruling of a single court. The problem for the Michigan Supreme Court justices was that the state of Michigan hasn't explicitly identified the threshold for being under the influence marijuana, the same way it usually takes a blood-alcohol level of at least .08 to be considered under the influence of alcohol, and charged with driving while intoxicated. The vagaries pitted the state's Zero Tolerance policy against the protections accorded by Michigan's Medical Marijuana Act, and the Zero Tolerance policy lost. We imagine there'll be a rematch – yet another one – soon enough.

Despite the fact that General Motors has already pulled the wraps off of the highly anticipated Chevrolet C7 Corvette Stingray – in both coupe and convertible forms – there's still a lot we don't know about The General's new halo car. When it first launched, GM stated that the 'Vette's new 6.2-liter LT1 V8 would put out an estimated 450 horsepower and 450 pound-feet of torque. But some PDF scans found by the folks at the Corvette7 forum site show that the Stingray coupe might actually throw down 455 hp and 460 lb-ft – increases of 5 hp and 10 lb-ft over the original numbers, and gains of 25 hp and 36 lb-ft versus the current car's 6.2-liter LS3 V8.

If these PDF scans are to be believed, it looks like only the coupe will benefit from this slightly more powerful setup, as a similar spec list for the Corvette Stingray Convertible states that the droptop will make 450 hp and 450 lb-ft – spot on with the original estimates. Official fuel economy numbers are still unknown, though GM has previously stated that the 'Vette is "expected to improve" upon the current car's EPA highway rating of 26 miles per gallon.

We expect the officially official numbers to be revealed later this year, closer to the Corvette's launch. Head over to Corvette7 to read more, and check out the PDF scans for yourself in the gallery below.

A possible issue with a steering wheel bolt in the Nissan Micra (shown) and Cube from the 2002 to 2006 model years has Nissan recalling roughly 841,000 units on four continents, as well as Oceania and the Middle East. On the affected cars, the bolt may not have been tightened properly, which could lead to a loss of steering in a worst-case scenario. According to Reuters, there haven't been any reports of accidents or injuries due to the fault, however.

The Micras affected were built in the UK and Japan, the Cubes in Japan. Nissan has yet to say when the recall will begin, but when it does, owners can take their cars to dealers for repairs; the bolt with either be tightened or, if necessary, a new steering wheel installed.

With arch rival Ford of Australia having announced earlier this week that it will cease all in-continent manufacturing in 2016, you might think that General Motors' Holden division might be feeling a bit more confident about its future prospects. Yet that doesn't necessarily appear to be the case. At least for the moment, Ford's headline-grabbing announcement may take some of the wind out of the sails of Holden's new VF Commodore lineup (SS model pictured above), a critical new range launching right now. Further, the same high assembly costs that are being blamed for Ford shuttering its plants Down Under also affect Holden, and then there's the as-yet-unknown effect of the Blue Oval's pullout on Australia's supplier base, much of which the two companies share.

According to an official statement attributed to Holden chairman Mike Devereux, the automaker is holding hands on both sides of the country's political aisle as he works to secure government goodwill and understanding for the auto industry's challenges. For the moment, Holden's commitment to Australian production appears stronger than Ford. Devereux notes the company has already vetted a 10-year production plan with the Australian government, and the billion-dollar investment that it requires will result in a pair of new global vehicles. Needless to say, Holden executives have a lot to figure out if they're going to continue to a viable enterprise in Down Under, and Ford's departure may add a sense of urgency to those discussions.

Nissan scored a big win for itself when the NV200 was named New York City's Taxi of Tomorrow, but the compact van has been under attack ever since. The latest setback for Nissan comes from the New York Supreme Court, which has reportedly ruled the deal between NYC and Nissan is "null, void and unenforceable" since the NV200 is not a hybrid – one of the key parts of NYC Mayor Michael Bloomberg Taxi of Tomorrow plan.

The NV200 Taxi launches this October. Although Nissan says it is bringing a hybrid version of the van to market in 2015, the New York Supreme Court ruled against Nissan, which opens the door for taxi companies in NYC to drive non-Nissan hybrid vehicles. Despite this setback, it doesn't sound like this ruling will affect the NV200 becoming the official taxi of NYC as a part of the 10-year contract worth an estimated $1 billion.

Here we have Autocar making an unforeseen comparison: the Nissan GT-R against the Alpina B6 at Brands Hatch and on public roads. Steve Sutcliffe clobbers the circuit in the 3,828-pound, all-wheel-drive sports car, then sees how well the 4,114-pound, rear-wheel drive grand tourer does against it.

Sutcliffe says there are quite a few similarities between the two cars, but that's really only on the spec sheet. The Nissan's got two turbos attached to its 3.8-liter V6, 542 horsepower and 465 pound-feet of torque. The Alpina's got two turbos attached to its 4.4-liter V8, 532 hp and 528 lb-ft. But one's brief is to be a monster on the track, the other on the boulevard, and if there's anything the video demonstrates, it's each car's focus.

The results are lopsided, and so is the way the winner was chosen. Sutcliffe's still fun to watch, though, and you'll find him in action in the video below.

As car lovers, it's always hard to find a good television show with decent cars, but what the 1990s show Viper lacked in acting, scripting and plot, it more than made up for with cool cars. For starters, the lead car was a Dodge Viper RT/10, but, on screen, it was able to morph into its "Defender" mode making it an armored coupe with a full arsenal of weapons.

Fortunately, you don't have to be a fan of the bad show to love its lead car, and if you really want one, a Defender is up for auction right now on eBay. According to the listing, this car is the real deal – not a clone – and it comes with a V8 engine (not sure what happened to the V10?) and plenty of swag and memorbilia. No word on its actual asking price, but with a day left and 42 bids already, the reserve has not been met at $133,400. The listing does add that this same car was listed at Mecum back in 2010, but did not get sold, even with a bid of $270,000.

Generally speaking, holiday weekends are always good for auto sales, but the Detroit Free Press says that dealers are expecting to do exceptionally well during this year's three-day Memorial Day weekend. Even better, forecasts have 2013 new-car sales being the best the industry has seen since 2002 – predictions are hovering between 15 million and 16 million units for the year.

Leading this rebound is the fact that construction and home-building industries are picking back up, which is an especially good sign for truck sales. The article points out that truck buyers tend to fare particularly well during Memorial Day weekend, as prices are usually discounted around 20 percent. The final bit of good news in the story – for the industry – is that this year's average price of newly purchased vehicles is $28,921, which is not only up from last year, but also the highest total ever for the month of May.

Judging by the destruction the Oklahoma City area experienced earlier this week, residents are going to need a lot of help in coming months. Fortunately, a number of automakers – including General Motors, Ford, Chrysler, Volkswagen, Honda and Toyota – have stepped up to donate money, supplies and vehicles to aid in the recovery and rebuilding processes.

Here's a quick rundown of which automakers have pitched in and what each contributed so far:

• Ford Motor Company has donating $250,000 and a Transit Connect to the American Red Cross, and it will match all other donations made to the Red Cross (up to $250,000) using a special URL tied to the latter's website (link here). Additionally, its local Oklahoma dealers have thrown in an extra $150,000 for the United Way and the automaker will be offering an extra $500 toward the purchase of a new Ford vehicle.
• GM has given $50,000 and a 2013 Chevrolet Silverado to a Detroit-area charity called Forgotten Harvest, which has set up a campaign called "Help 4 Oklahoma" to bring food, medical and hygiene products to the area.
• Chrysler is donating $100,000 to First Response Team of America – a nonprofit that assists first responders and helps with disaster cleanup.
• Toyota has announced that it is donating $250,000 to restore food service to the area, small businesses revitalization and home rebuilding, and in addition to this amount, it will also be matching employee contributions.
• The Detroit Free Press is reporting that Honda is donating generators to the Red Cross – a big advantage of having a power equipment division.
• Volkswagen says it made a $250,000 donation to the Red Cross and Habitat for Humanity, but it isn't clear if that was a combined donation or that much was given to each organization. VW is also matching the funds of its employees.

Fresh from critical praise for the last installment in the series, Need For Speed: Most Wanted, Electronic Arts has formally announced that Need For Speed Rivals will be the next title in the series. Set to hit stores on November 19, the game will also be the first Need For Speed to be available on next-generation consoles Xbox One and Playstation 4, as well as the current Xbox 360 and Playstation 3.

The "rivals" in question for this NFS title are, of course, cops and street racers – nothing new there – but the gameplay is apparently getting a makeover. Players may choose to be racers, and live the life of evading cops, gaining infamy, videoing their slipperiest moves and earning Speed Points. They might also choose to play on the side of law enforcement; attaining higher ranks and faster police cars with more and increasingly challenging busts.

One big innovation in Rivals will be the use of a new play system called AllDrive. The concept is that a player can seamlessly move from playing in single player mode, to playing online with friends, without having to wait in a lobby or move through a menu interface. The game will merge one's play from single to multiplayer as your friends across the web go on and offline, and you can choose to interact with them or not, as you like.

One more item of note: Ferrari will be making its return to the NFS world in Rivals. The following press release mentions that the game has booked Ferrari for this new title, specifically calling out the F12 Berlinetta as being invited to the party. Continue on below for the official press release, as well as a short video teaser of the new game.

Toyota has built itself into the industry's standard-bearer when it comes to hybrids, and it isn't going to let the poster child for gas-electric vehicles get stale on the market. These spy shots captured in California are our first good look at the next-generation Prius, which could come to market wearing a 2015 model year designation.

Even though it looks like Toyota may have blown its annual camouflage budget on this mule, we can clearly see that it will have the same iconic half-moon design that has been with the car since 2003. If so, this goes against reports from last year that suggested the car would be getting a different look inspired by the 2013 NS4 Concept. Although, this could also indicate that the Prius family will continue to grow – adding a new sedan – to the existing Prius C, Prius V and Prius Plug-In lineup.

These spy shots also give us an indication as to what the interior will look like, with a more stylish three-spoke steering wheel and an instrument panel design that sort of reminds us of a BMW. On the other hand, all the tape, cobbled together pieces and lack of space for a center stack display screen has us thinking this isn't what the final product will resemble.

As for what will be powering the 2015 Prius, we hear that updated versions of the current electric system and engine will be employed, but it will carry over the nickel metal hydride batteries found in today's model. Still no word on the rumored possibility of all-wheel-drive system, either. In addition to a new design and updated powertrain, it sounds like production of the next-generation Prius could be making a move to the US, joining the line at Toyota's Tupelo, MS plant.

Aston Martin has released a short teaser video entitled Coming Soon that features the image above near its close. Based on the profile and the hood intakes, the short money is on this being the V12 Vantage S, since the standard model has yet to earn the addition of the 19th letter of the alphabet. It looks like there might also be a new roof treatment on the car in the video, but that could merely be a trick of the light.

It probably won't be long before we get another teaser or the genuine article revealed. For now, there's the video below provided for your sleuthing.

Volkswagen has gotten pretty comfortable hogging the – admittedly small – non-premium diesel car market in the US. With Golf and Jetta, the German automaker has been the one and only choice for those interested in the torquey, high-mpg merits of turbocharged diesel power.

However, US customers seem to be growing more interested in the technology that has been the primary mode of propulsion in most of Europe for many years now. Mazda is quite close to bringing its Skyactiv-D diesel engines to our shores, and Chevrolet has finally maneuvered to repurpose its European 2.0-liter turbo-diesel engine for US specification, which means it's cleaner here than overseas.

The first application of this rather impressive diesel engine is in the compact Chevy Cruze, which I spent a recent morning testing out. General Motors as a whole has high expectations for its new TDI-buster. Here's why:

Driving Notes:

• Since the Cruze Diesel has the Jetta TDI squarely in its targeting computer, allow me to start off with a tale of the tape for the two engines. Chevy's diesel displaces 2.0-liters, makes 151 horsepower and 264 pound-feet of torque (with an overboost mode that allows for brief moments of 280 lb-ft), consumes an EPA-estimated 46 miles per gallon on the highway and 27 in the city, and launches the Cruze from 0-60 miles per hour in 8.6 seconds. The Jetta TDI has a similar 2.0T diesel, with 140 hp and 236 lb-ft of torque, is rated at 42 mpg highway and 30 mpg city, and will 'sprint' to 60 mph in 8.7 seconds (with DSG transmission). Chevy only offers a six-speed automatic with the Cruze Diesel, while VW will sell you a six-speed manual or a six-speed dual clutch gearbox.
• Turn the key on the Cruze Diesel and, if the windows are down, you'll hear a rather loud, clattering noise from the engine bay, at idle. The sound isn't worse than other small diesels we've heard, but it is surprising since the sealed-cabin quiet of the Cruze is remarkably high. With loads of attention paid to refinement at speed, the Cruze is all but silent on the highway (there's some wind noise), and the exhaust note only intrudes when approaching the 5,000-rpm redline.
• Power from the diesel engine feels super strong from even very low revs, as is expected, I guess. Peak torque is available at just 2,600 rpm, and a full 250 lb-ft can be had over the broad expanse between 1,750 and 3,000 rpm. Much like the Jetta, the Cruze isn't fast from a dead stop, but the acceleration from middle to high highway speeds (60 to 80 mph, let's say), is fantastic.
• I drove or rode for about 90 miles in total over this very short preview program, but early returns on the fuel economy are good. Cruising at around 75 mph on the highway saw the fuel econ meter settle at around 44 mpg after just 15 miles, so my guess would be that the estimated 46 mpg or better is easily within reach. (We know from experience that more than 50 mpg is was possible with our long-term Jetta TDI.) On the second leg of our trip, which started on country roads and headed back to the highway, I saw roughly 30 mpg after starting really aggressively and then settling into speed-limit driving around 40 mph. Again, with an EPA City rating of 27 mpg, I'd guess that the Cruze is set to have better real-world numbers than its window sticker would suggest.
• The overall ride characteristic of the Cruze matches its noiseless cabin, insofar as the car really smoothed out the road underneath me. I drove over some pretty broken down Michigan backroads in the car, and found that only the worst potholes and pavement breaks filtered through the softish suspension setup.
• That softness in the suspension, combined with low rolling resistance tires, meant that when I did try to corner aggressively in the Cruze I was met with a lot of vertical motion from the corners and loss of grip. The small Chevy does have a nicely balanced front-wheel-drive chassis for the most part, but handling is only satisfying up to a warmed-up point.
• In all, I think that the new Cruze Diesel presents an interesting counterpoint and alternative to the Jetta TDI, without being dramatically better or worse than the default diesel standard bearer. You can buy the Jetta for a cheaper starting price at $23,055 with no options, but Chevy has, for better or worse, piled on a good amount of kit to its $24,885 basic Cruze Diesel. That sum (plus another $810 for destination) will get you remote keyless entry and start, heated front leather seating, MyLink with Bluetooth connectivity and a touchscreen interface, 17-inch aluminum wheels and more. I think that the 2LT package ($380 for power, heated mirrors, rearview camera, etc), the $795 navigation option and the $100 option for a heated oil pan (great for cold starts) are really good values, too.
• What you get with the Jetta is an ever-so-slightly sportier package (thanks mostly to the better manual/DSG transmission options) and a little bit more brand prestige in the minds of most buyers. This diesel Cruze will need some time to penetrate the land of enthusiasts and diesel geeks, I'm guessing, but it's a fine sedan in its own right, and worth at least a look from even the most ardent TDI supporter.

During last year's Monaco Formula One Grand Prix weekend, Renault introduced us to the Alpine A110-50. This year, it's another revival called Twin'Run - the follow up to the Twin'Z but not called TwinFun, as we previously thought - a smooth blue hatch to update all those yellowed memories of the Renault R5 Turbo and Clio V6. With the same footprint as the Twin'Z, this is the other side of the 'play' theme in Renault's six-stage exploration of the stages of life through concept cars.

The Twin'Z is admittedly a neat piece of work, but the Twin'Run one - and its murderous exhaust note - has our hot breath all over it. A steel, tubular chassis provides the structure. Within it, just ahead of the rear axle is a 3.5-liter V6 with 320 horsepower and 280 pound-feet of torque, shifted through a six-speed sequential transmission. To keep its city-car proportions stable on 18-inch wheels, the fuel tank, radiator and hydraulic system are in the front, under the hood, resulting in a 43/57 front-to-rear weight balance.

The bodywork is a mix of glass fiber and carbon fiber, the squarish headlamps and supplemental quad headlamps a nod to the R5 Turbo rally car and its light rack for nighttime stages. Inside is lots of black and red Alcantara, a gauge cluster wrapped in white lacquer and aluminum pedals whose setup is said to be motorsports tested.

The whole package weighs 2,090 pounds, and you can read all about it in the press release below. There's also a very French short film to go with it that you know involves lots of models clad in lots of leather, and those vintage forbearers.