Ford Mustang GT500 Shelby convertible

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

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2013 Hyundai Elantra Coupe

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

2013 Acadia Denali

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

Kia introduces the Trackster

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

Hyundai introduces the 2013 Elantra GT

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

Kia introduces the Trackster

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)

GMC introduces the 2013 Acadia

Media preview at the Chicago Auto Show. (credit: Scott Olson/Getty Images)