A

A CT&T electric parking enforcement vehicle is displayed at the North American International Auto Show in Cobo Center in Detroit, Michigan January 12, 2010. (Reuters / Rebecca Cook)

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A Subaru Hybrid Tourer concept car is exhibited at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010.(Reuters / Mark Blinch)

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A Tesla Model S electric car is seen charging at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 12, 2010.(Reuters / Mark Blinch)

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A CT&T electric car is taken for a test drive on the The EcoXperience indoor test drive track at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010. (Reuters / Mark Blinch)

Ford

Ford Motor president of the Americas Mark Fields holds up two trophies after Ford swept the North American Car and Truck of the Year awards winning for the 2010 Ford Fusion Hybrid and the 2010 Ford Transit Connect during Press Days of the 2010 North American International Auto Show in Detroit, Michigan January 11, 2010.( REUTERS/Rebecca Cook )

Ford

Ford Motor Company President & CEO Alan Mulally stops and shines the hood of a next-generation Ford Focus vehicle on display during the North American International Auto Show at the Cobo Center in Detroit, Michigan January 12, 2010. ( Reuters / Ford Motor Co / Handout)

Media

Media people are seen on stage after Lincoln introduced their 2011 Lincoln MKX at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 12, 2010.(Reuters / Mark Blinch)

People

People walk by the Volkswagen showroom at the 2010 North American International Auto Show during press days in Detroit, Michigan January 11, 2010.(Reuters / Mark Blinch)

General

General Motors Vice President of Global Design Ed Welburn sits in the automaker's Cadillac XTS Platinum Concept vehicle at a media event during the North American International Auto show at Cobo Center in Detroit, Michigan January 12, 2010. (Reuters / Rebecca Cook)

Rick

Rick Woodbury, President of Commuter Cars, sits in the Tango electric car at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010.(Reuters / Mark Blinch)

The

The 2010 Ford Fusion is seen in from in Detroit, Michigan January 11, 2010.(Reuters / Mark Blinch)

The

The Audi e-tron concept car is seen at the 2010 North American International Auto Show during press days in Detroit, Michigan January 11, 2010.(Reuters / Mark Blinch)

The

The Commuter Cars Tango electric car is taken for a test drive on the The EcoXperience indoor test drive track at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010. (Reuters / Mark Blinch)

The

The CT&T C Square electric car is revealed at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 12, 2010. (Reuteres / Mark Blinch)

The

The CT&T e-Zone Plus electric car is displayed at the 2010 North American International Auto Show in Detroit, Michigan January 12, 2010. (Reuters / Mark Blinch)

The

The electric CT&T Multi Amphibious Vehicle that can drive on land and water is revealed at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 12, 2010.(Reuters / Mark Blinch)

The

The interior of the Hyundai Blue-Will concept hybrid car that is seen at the 2010 North American International Auto Show during press days in Detroit, Michigan January 11, 2010.(Reuteres / Mark Blinch)

The

The new Ford Focus is on display after the debut at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 11, 2010.(Reuters / Mark Blinch)

The

The new Mercedes-Benz E-Class Cabriolet is seen at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 11, 2010.(Reuters / Mark Blinch)

The

The Revenge Designs Verde Supercar Hybrid is seen on display at the 2010 North American International Auto Show in Detroit, Michigan January 12, 2010.(Reuters / Mark Blinch)

The

The Tesla Motors Model S hybrid car is plugged into an electric outlet at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010.(Reuters / Mark Blinch)

The

The Toyota FT-CH hybrid electric concept car is seen after is was unveiled at the 2010 North American International Auto Show during press days in Detroit, Michigan, January 11, 2010.(Reuters / Mark Blinch)

The

The Toyota Prius Plug-In Hybrid car is attached to an electric outlet at the 2010 North American International Auto Show during press days in Detroit, Michigan January 12, 2010.(Reuters / Mark Blinch)

Volkswagen

Volkswagen introduces its new Concept Coupe Hybrid vehicle during Press Days of the 2010 North American International Auto Show in Detroit, Michigan January 11, 2010 in Detroit, Michigan.Reuters / Rebecca Cook)