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2011 Chevrolet Volt – Click above for high-res image gallery

It's starting to look more and more likely that the Wankel rotary engine could have a future as an electric vehicle range extender. Felix Wankel's original concept was once seen as having great potential because of its high power density compared to piston engines. Unfortunately, the manufacturing processes available in the 1960s and 1970s made it difficult to achieve adequate durability without high oil consumption and excessive emissions.

At last week's Automotive News Green Car Conference, Brian Carolin, senior vice president for sales and marketing at Nissan acknowledged that extended range electric vehicles (EVs) could eventually join the pure battery electric Leaf in the marque's stable. However, Carolin emphasized that Nissan wanted to maximize the environmental benefit of its initial entries by going with pure battery electric and no direct emissions.

Sure enough, someone out there still wants Hummer. According to a report by The Car Connection, Raser Technologies has put multiple bids in for the General Motors Earth-squishing trucks – both before and after the failed bid from China's Sichuan-Tengzhong. Raser Technologies made a name for itself by converting an H3 into a plug-in hybrid not too long ago, and if the company managed to gain control of the future of the Hummer brand, you could bet your biscuits it wouldn't be too long befor

As we suspected recently when we heard that Proton would be showing a hybrid concept car next week at the Geneva Motor Show, the propulsion system has been developed by Lotus. Malaysian automaker Proton owns the British engineering consultancy and sports car builder.

Many electric vehicle fans out there are constantly complaining about how long it is taking automakers to bring plug-in vehicles to market. We've had commenters here on this site claiming that they should be able to bring EVs to the street in six months. Apparently even six months is too long for the crew at Top Gear.

For the past year Jaguar, Lotus, Caparo Vehicle technologies and the MIRA proving ground have been working on a UK government funded project dubbed Limo-Green. The goal of the project was to develop and build a series hybrid luxury sedan. Earlier this week, Jaguar showed off the car for the first time. Most of the powertrain development work was done using a last-generation XJ but recently all the hardware was moved into the just-launched 2010 XJ.

The Opel Ampera concept and one of the Cruze mules - click above for high-res image gallery

2007 Mitsubishi cX concept - click above for a high-res image gallery

At the Detroit Auto Show in January, Cadillac surprised the crowd with a gorgeous concept coupe called the Converj. Built on the same Voltec platform as the Chevy Volt, the Converj was seen as a potential way for GM to leverage the pricey ER-EV drivetrain in a vehicle that could sell at a premium price, hopefully recovering some of the development costs. According to Todd Lassa at Motor Trend, the Converj has been given the green light for production in 2011, a year after the Volt launches. When

Cadillac Converj - Click above for a high-res image gallery

Jaguar is apparently planning to attack the upstart Fisker Karma head-on with an extended range electric version of the all-new XJ. The completely reworked XJ is due to arrive in July and hit dealers in December with a look heavily influenced by the smaller XF. A year later, the Indian-owned British luxury automaker will reportedly launch a plug-in version with 30 miles of electric only range that should help the big car get 47 mpg (US) and a CO2 emissions rating of less than 120 g/km.

Jaguar is apparently planning to attack the upstart Fisker Karma head on in a couple of years with an extended range electric version of the all-new XJ. The completely reworked XJ is due to arrive in 2010 with a look heavily derived from the smaller XF. A year later, the Indian owned British luxury maker will launch a plug-in version with 30 miles of electric only range that should help the big car get 47 mpg (US) and a CO2 emissions rating of less than 120 g/km.

During the Washington Auto Show in February, GM announced that cities like San Francisco and DC were likely going to be the first to get the Volt roll-out. Today, GM gave an update on how it is helping to bring about the infrastructure for the Volt and other Voltec vehicles - oh, and the rest of the plug-in armada that is (hopefully) just around the corner - through a conference call featuring Tony Posawatz, vehicle line director of the Chevrolet Volt, Mark Duvall, director of electric transport

Lou Rhodes and the Dodge Circuit prototype

Ever since the debut of the Chevrolet Volt concept in January 2007, the arguments have come fast and furious abut whether it is a hybrid or an electric vehicle. Technically, its actually both. There are those who insist on calling the Volt and similar vehicles from Chrysler, series or serial hybrids. This argument seems to come mostly from those who believe an electric vehicle should have nothing but a battery (or other electrical device) on board for energy storage. Certain proponents of parall

Click the plug-in hybrid Escape for a high res gallery

Click above for high-res image gallery of the Jeep Patriot EV

Click above for high-res gallery of the Jeep Patriot EV

Over the last century and a half engineers and designers have created a wide array of different combustion engine designs. In spite of certain inherent advantages of some of these designs, the traditional four stroke reciprocating engine has continued to dominate the transportation space. Many of these alternatives have worked in principle but have never been adopted for several reasons. The most important reason is typically the problem of converting the chemical energy of combustion into rotat

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