BMW's twin-turbo 3.0L inline-six has been a rousing success, with nothing less than a Wards 10 Best Engines award sitting in its trophy case. The praise is understandable and well-deserved, as the engine uses a combination of forced induction and direct injection to serve up a torque curve that's far beefier and flatter than what should be expected from a engine of its size. So what next for the propeller brand? Simple -- take similar technology, add it to the company's 4.4L V8 and toss in a dash of unconventional packaging to make everything fit.

BMW put its latest jewel on display at the 2008 Detroit Auto Show, and we snapped some shots of it to give you an idea of why this engine is so special. We've included those photos in one of our galleries, and below the fold, we've thrown in a few observations.

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Yea, we know - the automotive press has featured a whole bunch of Corvette ZR1 content lately (including us!), and readers are probably getting a bit tired. However, we figure that a cutaway of the mighty supercharged LS9 should be interesting enough to justify yet another post on the revived King of the Hill.

Painted in monochrome silver as GM is wont to do, this particular display isn't particularly photogenic. Still, we were able to capture some details that aren't easily observed in 2D drawing or press releases, so click through the jump for a variety of shots.

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With Audi's introduction of the Audi R8 V12 TDI, we got to look at the most unique aspect of this supercar - its diesel engine. Compression-ignition motors may be commonplace everywhere else in the transportation world, but they haven't yet infiltrated the supercar segment. This is no accident, as until now, diesels have offered a poor ratio between power output and weight - not a big problem for cruise ships and the like, but definitely an obstacle to recruiting a high-performance customer. So, how did Audi get around this problem? We've got a gallery full of shots showing the naughty details (you can access it by clicking the photo above or the link below), and if you go below the fold, we'll walk you through what we observed of the engine on display.

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As gorgeous as the 2009 Corvette ZR1 may be on the outside, it's what is under the skin that gets our blood pumping. Fortunately, GM stripped down its new supercar to the bare essentials and put it on display here at the 2008 Detroit Auto Show.

You can access our gallery of ZR1 chassis photos by clicking on the photo above. We've also got commentary on what you're looking at after the jump.

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We've been hearing about Honda's upcoming clean diesel for quite some time now, and the automaker was kind enough to show a cutaway of the i-DTEC clean diesel for us at the 2008 Detroit Auto Show. Expect to see the engine appear first in an upcoming and unnamed Acura product around 2009 - but while you may have to wait over a year for the engine, you can see some cutaways of it right now in our photo gallery below. Click past the jump for some brief commentary on what we learned about Honda's i-DTEC clean diesel in Detroit.

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click above for more live high-res images of the Cadillac Provoq Concept

We've already covered Cadillac's Provoq E-Flex fuel-cell vehicle during its first public appearance at the Consumer Electronics Show last week, but GM also rolled it across the stage here in Detroit. There were no additional technical details or hints towards production plans (either for the E-Flex powertrain or the BRX crossover that this design represents), but we at least got to spend a few minutes up close and personal with the concept to snap some shots of the whiter-than-the-pure-driven-snow interior. Also note the chromed cowl vent. Oh, and the Provoq wears what has to be the skinniest tires we've seen on a concept car in recent memory.

Update: Video of the CTS-V live reveal are available after the jump.

Click the photo above for a gallery of live shots

If you look at the picture above, you can easily imagine Maximum Bob shouting, "I told you folks that it'd be <bleeping> spectacular!" Those of course were not his exact words during the intro of the 2009 Cadillac CTS-V, but the sentiment was approximately the same.

We've already covered the technical details, but in case anyone has been disconnected from the world for the past week, here's what is important - 550 HP and 550 lb-ft of torque from the supercharged LSA 6.2L V8, huge Brembo brakes front and rear, Magnetic Ride Control suspension, and a choice of a manual or automatic (each carrying six forward ratios). Huge Michelin Pilot radials wrap the 19" wheels, and inside are a pair of seriously sporty Recaro buckets with 14-way adjustment. If there has ever been a four-door embodiment of the Corvette spirit, this is it.

We've already started behaving well, just in case Santa is thinking of bringing us one next Christmas. Rest assured, though, that our behavior behind the wheel of the CTS-V would earn us several years of coal in our stocking along with a revoked driver's license - and it'd be worth it.

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click above for more images of the Dodge Caraven R/T Concept

Tucked away among its more pedestrian brethren was Dodge's Caravan R/T concept. We have no details on the powertrain or what else may lie beneath its skin, but the appearance changes are rather obvious. Sporting 20" forged Alcoa wheels and 245/45-20 Goodyear Eagle RS-A rubber, the fast family hauler sits just a bit lower to the ground, as well (we suggest telling your significant other that this feature makes it easier for the kids to get in and out of the vehicle). A scooped hood feeds air to whatever powerplant resides underneath, and a dual exhaust out back facilitates the removal of spent combustion gases. Inside, white-faced gages communicate information to the driver, and each occupant gets two-tone leather buckets with bright-red stitching.

We have no idea when such a vehicle might hit the showrooms, so direct your requests, complaints, and begging towards your nearest Chrysler representative.

click above for more high-res live shots of the BMW 1 Series Convertible

The final reveal in BMW's three-movement press conference was a drop-top version of its perfectly-sized 1 Series. While some in the audience might have preferred that the preceding female dancers had instead lost their tops, this vehicle was not a bad consolation prize.

Available in naturally-aspirated (128i) and forced-induction (135i) flavors, the 1 Series 'vert offers wind-in-your-face motoring in a mere 22 seconds by virtue of its electrohydraulic power soft top. Technical goodies abound, such as VALVETRONIC, an on-demand electric water pump that uses only 1/10th the power of a standard water pump and only runs when required, and pop-up roll bars to protect the occupants in case the vehicle goes rubber-side up. Additionally, the 135i gets an electronically-controlled limited slip differential to help cope with its additional 70 HP, as well as six-piston calipers up front to bleed off all of that speed.

BMW made note of the boat-like shape of the "shoulder" (the character line just below the 1 Series' beltline), and we gotta admit that it looks this way in person. More important than how design features are described is how well the overall package works, and the 1 Series is indeed attractive as a convertible. Consider approved by Autoblog. A variety of M Series options are available on both cars to spruce up the exterior and interior, with the 135i already getting a version of the M Aerodynamics Package as standard equipment.

Oh yeah, the price: the 128i Convertible will start at $33,875 while the hopped up 135i will break your bank at $39,875. Yikes!

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click above to view more high-res images of the BMW X6

Dropping the "concept" descriptor that it carried in Frankfurt, the BMW X6 was just revealed at the Detroit Auto Show in full production trim. Not surprisingly, it's almost identical to what we saw in Frankfurt, with a sharply-raked backlight and hatchback replacing the squared-off rump of the X5. BMW likes to describe it as a blend between a coupe and a crossover, which leads us to ask - is it possible to crossover from something that's already a crossover? Does this mean that it's been double-crossed? The mind boggles.

Follow the jump for our first impression...

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