AP Photo/Tony Ding
The Mercedes-Benz E 350 convertible is displayed at the North American International Auto Show Monday, Jan. 11, 2010 in Detroit.
AP Photo/Paul Sancya
The Cadillac XTS Platinum concept car is introduced at the North American International Auto Show Tuesday, Jan. 12, 2010, in Detroit.
AP Photo/Carlos Osorio
A Subaru Hybrid Tourer concept car is shown at the North American International Auto Show Tuesday, Jan. 12, 2010, in Detroit.
AP Photo/Carlos Osorio
A 2011 Lincoln MKX is introduced at the North American International Auto Show on Tuesday, Jan. 12, 2010, in Detroit.
AP Photo/Paul Sancya
The Hyundai Blue-Will concept car is shown at the North American International Auto Show Monday, Jan. 11, 2010 in Detroit.
AP Photo/Carlos Osorio
The Chevrolet Aveo RS is introduced at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Carlos Osorio
The Toyota FT-CH compact hybrid concept car is introduced at the North American International Auto Show in Detroit on Jan. 11, 2010. Asia automakers have grabbed their biggest chunk ever of the U.S. car and truck market and hope to build on that momentum in 2010 with their "green" car offerings.
AP Photo/Carlos Osorio
The Audi A8 is introduced at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Carlos Osorio
Honda Motor Co. President & CEO Takanobu Ito and Executive Vice President of American Honda Motor Co. John Mendel pose in front of 2011 Honda CR-Z at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Carlos Osorio
A 2011 Ford Fiesta is displayed at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Paul Sancya
A Bentley Mulsanne is shown at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Paul Sancya
Brian Sweeney, Buick GMC general manager, and Jim Federico, global chief engineer of Buick Regal, right, introduce 2011 GMC Acadia Denali, left, GMC Granite concept truck, and 2011 Buick Regal GS at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Paul Sancya
Jim Federico, global chief engineer of Buick Regal, introduces 2011 Buick Regal GS at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Paul Sancya
The GMC Granite concept truck is introduced at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Carlos Osorio
Ford Motor Co. CEO Alan Mulally, left, and Ford Motor Co. Executive Chairman William Ford Jr., pose next to the next-generation Ford Focus 5-door at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.
AP Photo/Carlos Osorio
The next generation Ford Focus 4-door is introduced at the North American International Auto Show on Monday, Jan. 11, 2010, in Detroit.