An attendee demonstrates the OnStar Corp. 4G LTE dash system on a General Motors Co. (GM) Chevrolet Impala vehicle during the 2014 North American International Auto Show (NAIAS) in Detroit, Michigan, U.S., on Monday, Jan. 13, 2014. General Motors Co.'s Chevrolet brand swept the North American Car and Truck of the Year awards at the Detroit auto show today with its Corvette Stingray sports car and Silverado pickup. Photographer: Daniel Acker/Bloomberg via Getty Images