Chicago Auto Show's media preview day at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
Kia introduces the Niro Concept vehicle during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
2.4L Tigershark with MultiAir 2 engine is displayed at the Chrysler boot during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 7, 2014. (AP photo/Nam Y. Huh)
The Maserati Ghibli S Q4 is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh, File)
The Chrysler 2014 Challenger is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 7, 2014. (AP photo/Nam Y. Huh)
The Honda FCEV Concept is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
Nissan introduces the Frontier Diesel truck during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
Volvo introduces the V60 Polestar during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
The 2014 Chrysler Fiat 500L is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 7, 2014. (AP photo/Nam Y. Huh)
Nissan introduces the Frontier Diesel truck during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
The 2014 Cadillac CTS-V Coupe is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
The Porsche 2014 Boxster is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
The Mercedes-Benz 2015 C-Class is displayed during the media preview of the Chicago Auto Show at McCormick Place in Chicago on Feb. 6, 2014. (AP photo/Nam Y. Huh)
CHICAGO (WLS) -- A look back at the 2014 Chicago Auto Show.