Full Caption: General Motors unveils its newly redesigned Corvette Stingray in a formal industrial complex, Sunday, January 13, 2013, the night before press days at the North American International Auto Show in Detroit. When 1,000 GM engineers and designers started work on the next-generation Corvette, they began with the usual priority list for a muscle car. Killer looks. Big engine. Fast. But topping the list was something that belies the roar of the Chevrolet's giant V-8: Gas mileage.