The 2012 North American International Auto Show is playing host to a pair of coupe concept debuts from Chevrolet. The first, dubbed the Code 130R, was designed for efficiency. Their second coupe, dubbed the Tru 140S, is what Chevy calls an "affordable exotic." The term means that the new coupe has been designed for performance at an affordable price. The front-wheel-drive coupe runs on a 1.4-liter turbocharged Ecotec engine. It should put out 150hp and return 40mpg.