The front grill of the 2014 Ford Fusion is displayed at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. (AP Photo/Carlos Osorio)

A 2014 Chevrolet Silverado with a step in the rear bumper is displayed at media previews for the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. (AP Photo/Paul Sancya)

The front grill of the Hyundai HCD-14 Genesis Concept is displayed at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. Hyundai’s new luxury concept car shows off at least a dozen small inverted triangles that appear behind horizontal bars. The wide-mouth grille has a bunch of tiny holes, and the angles reflect light. It’s just one of many new styling cues on the HCD-14 Genesis, which Hyundai says is the direction it will take the next generation of its luxury cars, the Genesis and Equus. (AP Photo/Carlos Osorio)

The front lamps on the high-performance SRT version of the 2014 Jeep Grand Cherokee are seen at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. The lamps are tinted black, giving it a distinct look. And Ralph Gilles, a Chrysler design leader who also is president and CEO of the SRT brand and motorsports, noted the vehicle has black _ "kind of like death" _ headlamps. (AP Photo/Carlos Osorio)

A headlight on the 2014 Acura RLX is shown at media previews for the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. (AP Photo/Paul Sancya)

The front grill of the Hyundai HCD-14 Genesis Concept is displayed at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. Hyundai’s new luxury concept car shows off at least a dozen small inverted triangles that appear behind horizontal bars. The wide-mouth grille has a bunch of tiny holes, and the angles reflect light. It’s just one of many new styling cues on the HCD-14 Genesis, which Hyundai says is the direction it will take the next generation of its luxury cars, the Genesis and Equus. (AP Photo/Carlos Osorio)

A headlight with a Ford logo is shown on the Ford Transit van at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. (AP Photo/Carlos Osorio)

A tiny Corvette Stingray crossed-flag logo engraving, center, is seen in the Corvette's headlights displayed at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. (AP Photo/Carlos Osorio)

The front lamps on the high-performance SRT version of the 2014 Jeep Grand Cherokee are seen at the North American International Auto Show in Detroit, Tuesday, Jan. 15, 2013. The lamps are tinted black, giving it a distinct look. Ralph Gilles, a Chrysler design leader who also is president and CEO of the SRT brand and motorsports, noted the vehicle has black "kind of like death", headlamps. (AP Photo/Carlos Osorio)