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Tadge Juechter, Chief Engineer of Cadillac XLR and Chevrolet Corvette at General Motors(GM) stands with the 2014 Chevrolet Corvette Stingray, named the North American Car of the Year, January 13, 2014 at the 2014 Detroit Auto Show in Detroit, Michigan. STAN HONDA/AFP/Getty Images ( 525982567 )

The Chevrolet Corvette Stingray has been named North American Car of the Year while the Chevrolet Silverado has been named North American Truck of the Year at the North American International Auto Show in Detroit, Monday, Jan. 13, 2014. (AP Photo/Paul Sancya) ( Auto Show Awards )

The new Porsche 911 Targa is introduced at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 13 January 2014. EPA/TANNEN MAURY ( USA DETROIT AUTO SHOW )

The BMW M4 coupe is unveiled at the North American International Auto Show in Detroit, Monday, Jan. 13, 2014. (AP Photo/Carlos Osorio) ( Auto Show )

The new Chrysler 200 S is introduced at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 13 January 2014. EPA/TANNEN MAURY ( USA DETROIT AUTO SHOW )

Dan Ammann, President of General Motors North America, introduces the 2014 Corvette C7R race car at the press preview of the 2014 North American International Auto Show January 13, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462448201 )

The BMW M235i is unveiled at the North American International Auto Show in Detroit, Monday, Jan. 13, 2014. (AP Photo/Carlos Osorio) ( Auto Show )

The new Toyota FT-1 Concept is revealed at the press preview of the 2014 North American International Auto Show January 13, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462437143 )

Dan Ammann, President of General Motors North America, introduces the 2014 Corvette C7R race car (left) and the Corvette Z0-6 (right) at the press preview of the 2014 North American International Auto Show January 13, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462448207 )

Kevin Hunter President of Toyota Calty Design Research talks about the new Toyota FT-1 at the North American International Auto Show, at the Cobo Center in Detroit, Michigan, USA, 13 January 2014. The North American International Auto Show is one of the largest car shows held each year in the United States, and opens to the public 18 January 2014. EPA/LARRY W. SMITH ( USA DETROIT AUTO SHOW )

The Mercedes S-Class CoupÈ concept car is unveiled, Monday, Jan. 13, 2014, at the North American International Auto Show in Detroit, Mich. (AP Photo/Tony Ding) ( Auto Show )

The new BMW M 235i at the North American International Auto Show, at the Cobo Center in Detroit, Michigan, USA, 13 January 2014. The North American International Auto Show is one of the largest car shows held each year in the United States, and opens to the public 18 January 2014. EPA/LARRY W. SMITH ( USA DETROIT AUTO SHOW )

Kelly Rowland performs during the introduction of the new Mercedes C Class at the North American International Auto Show (NAIAS) on January 13, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462442127 )

The new 'Chrysler 200 C' is introduced at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 13 January 2014. The North American International Auto Show Media Preview runs from 13 to 14 January. EPA/TANNEN MAURY ( USA DETROIT AUTO SHOW )

The 2015 Chrysler 200 sedan is unveiled, Monday, Jan. 13, 2014, at the North American International Auto Show in Detroit, Mich. (AP Photo/Tony Ding) ( Auto Show )

The new 'Chrysler 200 S' is introduced at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 13 January 2014. The North American International Auto Show Media Preview runs from 13 to 14 January. EPA/TANNEN MAURY ( USA DETROIT AUTO SHOW )

German Daimler AG company chairman and head of Mercedes-Benz Cars, Dieter Zetsche drives the S-Class Coupe concept car on stage as he introduces it at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, 13 January 2014. The North American International Auto Show Media Preview runs from 13 to 14 January. EPA/TANNEN MAURY ( USA NORTH AMERICAN INTERNATIONAL AUTO SHOW )

Chrysler introduces the 2015 Chrysler 200 at the North American International Auto Show (NAIAS) on January 13, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462437515 )

The BMW M4 coupe(R) and the M3 sedan are presented during the press preview at the North American International Auto Show January 13, 2014 in Detroit, Michigan. STAN HONDA/AFP/Getty Images ( 525989521 )

The Lexus exhibit is shown at media previews at the North American International Auto Show in Detroit, Monday, Jan. 13, 2014. (AP Photo/Paul Sancya) ( Auto Show )

The new Subaru WRX STi is introduced at the press preview of the 2014 North American International Auto Show January 14, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462630409 )

The Infiniti Q50 Eau Rouge is unveiled during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 526017387 )

A worker cleans a 2015 Toyota hydrogen-fueled FCV concept car on display during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 526017532 )

A Nissan Sport Sedan Concept is displayed during a media preview day at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462630271 )

David Coleman polishes up a BMW M3 on display at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462630307 )

Shannon Folsom shows off the new Chrysler 200 C at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462630263 )

The Chevrolet exhibit is seen at the press preview of the 2014 North American International Auto Show January 14, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462630029 )

Members of the media get a look at the Infiniti Q50 Eau Rouge as it is unveiled during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 526017435 )

The 2015 Lexus RCF is revealed at the press preview of the 2014 North American International Auto Show January 14, 2014 in Detroit, Michigan. Approximately 5000 journalists from more than 60 countries are expected to attend. The 2014 NAIAS opens to the public on January 18th and ends January 16th. (Photo by Bill Pugliano/Getty Images) ( 462626845 )

The new Lexus RC F automobile is presented at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 14 January 2014. EPA/TANNEN MAURY ( USA NORTH AMERICAN INTERNATIONAL AUTO SHOW )

The new Lexus RC F automobile is presented at the North American International Auto Show at the Cobo Center in Detroit, Michigan, USA, on 14 January 2014. EPA/TANNEN MAURY ( USA NORTH AMERICAN INTERNATIONAL AUTO SHOW )

A Nissan Sport Sedan Concept is displayed during a media preview day at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462630277 )

Porsche's new 911 Targa is displayed at the North American International Auto Show (NAIAS) on January 14, 2014 in Detroit, Michigan. The auto show opens to the public January 18-26. (Photo by Scott Olson/Getty Images) ( 462630299 )

The Infiniti Q50 Eau Rouge is unveiled during a press preview at the North American International Auto Show January 14, 2014 in Detroit, Michigan. AFP PHOTO/Stan HONDA/AFP/Getty Images ( 526017158 )

The Infiniti Q50 Eau Rouge is shown during media previews during the North American International Auto Show in Detroit, Tuesday, Jan. 14, 2014. (AP Photo/Paul Sancya) ( Auto Show )