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Volkswagen's Beetle GSR is presented during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013. (AP photo/Nam Y. Huh)

Kia's Cross GT Concept car is revealed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013. (AP photo/Nam Y. Huh)

The Superman-Inspired Kia Optima Hybrid Soars is revealed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013.e (AP photo/Nam Y. Huh)

The 2014 Nissan 370Z Nismo is revealed at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

Philip Zambrano details a 2014 Jaguar F-Type S at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

Volkswagen's Beetle GSR is presented during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013. (AP photo/Nam Y. Huh)

Toyota introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

Kia introduces the Cross GT Concept car at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

The redesigned 2014 Toyota Tundra is unveiled at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

The 2013 Nissan Juke Nismo is revealed at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

Volkswagen's Beetle GSR is revealed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013. (AP photo/Nam Y. Huh)

The 2014 Chevrolet Corvette Stingray is revealed at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

Kia's Cross GT Concept car is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Thursday, Feb. 7, 2013. (AP photo/Nam Y. Huh)

The 2013 Nissan Juke Nismo is revealed at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

Cristi Landy, small car marketing director for Chevrolet, introduces the 2014 Cruze with a 2.0 turbo diesel motor at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

The Chevrolet Cruze Clean Turbo Diesel engine makes its debut at the Chicago Auto Show, February 7, 2013. REUTERS/John Gress

Kia introduces the Cross GT Concept car at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

Toyota introduces the 2014 Tundra pickup truck at the Chicago Auto Show on February 7, 2013 in Chicago, Illinois. The Chicago Auto Show, one of the oldest and largest in the country, will be open to the public February 9-18. (Photo by Scott Olson/Getty Images)

Kia Design Center America's Tom Kearns poses with the Kia Cross GT at the Chicago Auto Show, February 7, 2013. REUTERS/John Gress

The 2014 Chevrolet Cruze Diesel is unveiled at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)

The 2014 Chevrolet Cruze Diesel engine is unveiled at the Chicago Auto Show Thursday, Feb. 7, 2013, in Chicago. (AP Photo/Charles Rex Arbogast)