Best of the Detroit Auto Show

Dieter Zetsche Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG, Head of Mercedes-Benz Cars gives a thumbs up at the debut of the 2014 E 63 AMG S 4matic at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Fred Diaz Fred Diaz, President and Chief Executive Officer, Ram Truck Brand, stands with the Ram 1500 after the vehicle was awarded the North American Truck of the Year at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The Mercedes-Benz SLK250, left, sits on display at the media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The BMW 4 Series Coupe Concept appears on display at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The Mini exhibit appears on display at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The 2013 Jeep Compass is introduced at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The 2014 Chevrolet Corvette Stingray is revealed at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The 2014 Chevrolet Corvette Stingray hangs on a wall at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The Lincoln MKC Concept is unveiled during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio

Daniel F. Akerson Daniel F. Akerson, General Motors Chairman and Chief Executive Officer speaks to reporters at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Shiro Nakamura Infiniti Chief Creative Officer Shiro Nakamura stands next to the newly unveiled Q50 sedan, at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The Mercedes-Benz 2014 E 63 AMG S 4matic debuts at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Ian Robertson BMW head of marketing Ian Robertson talks about the BMW 4 Series Coupe concept car at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The BMW 4 Series Coupe concept vehicle is unveiled at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The BMW M6 Gran Coupe is unveiled at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Dieter Zetsche Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG, Head of Mercedes-Benz Cars introduces variants of the 2014 E-class at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Bill Fay Toyota Division General Manager Bill Fay addresses the media before unveiling the Corolla Furia Concept during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio

Auto Show The BMW 4 Series Coupe concept vehicle is unveiled at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The Audi RS7 debuts at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Wolfgang Schreiber Bentley Chairman and CEO Wolfgang Schreiber unveils the GT Speed Convertible during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio

Wolfgang Schreiber Bentley Chairman and CEO Wolfgang Schreiber unveils the GT Speed Convertible during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio

Auto Show The Audi RS7 debuts at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

HYUNDAI MOTOR AMERICA HCD-14 GENESIS Hyundai's Premium Segment Success Sets The Stage For Next-Generation HCD-14 Genesis Reveal At The North American International Auto Show. (PRNewsFoto/Hyundai Motor America)

PRNewsFoto/Hyundai Motor America

HYUNDAI MOTOR AMERICA HCD-14 GENESIS Hyundai's Premium Segment Success Sets The Stage For Next-Generation HCD-14 Genesis Reveal At The North American International Auto Show. (PRNewsFoto/Hyundai Motor America)

PRNewsFoto/Hyundai Motor America

Dodge Dart FILE - In this Monday, Jan. 9, 2012, file photo, the 2013 Dodge Dart is unveiled at the North American International Auto Show, in Detroit, Mich. The Dart, unveiled with much fanfare at last year's Detroit auto show, got off to a slow start after going on sale in May 2012. Only 25,000 have sold, which CEO Sergio Marchionne concedes is short of his expectations. (AP Photo/Tony Ding, file)

AP Photo/Tony Ding, file

APTOPIX Auto Show The Audi exhibit is shown at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Ulrich Hackenberg Ulrich Hackenberg, Volkswagen Director of Produce Development for Power Trains stands next to the Volkswagen CrossBlue SUV during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio

Dieter Zetsche, Diane Kruger, Joshua Jackson Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG, Head of Mercedes-Benz Cars, center, speaks with actress Diane Kruger, left, and actor Joshua Jackson, right, at the debut of the Mercedes-Benz 2014 E-class at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The new Mini John Cooper Works Paceman is unveiled at the North American International Auto Show, Monday, Jan. 14, 2013, in Detroit, Mich. (AP Photo/Tony Ding)

AP Photo/Tony Ding

Auto Show The Audi RS7 debutes at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show The Honda Urban SUV Concept is shown at media previews for the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Paul Sancya)

AP Photo/Paul Sancya

Auto Show Toyota unveils its Corolla Furia Concept car during the North American International Auto Show in Detroit, Monday, Jan. 14, 2013. (AP Photo/Carlos Osorio)

AP Photo/Carlos Osorio