The 2013 Ford Mustang Shelby GT500 has apparently rustled some snakes within General Motors. Al Oppenheiser, Chief Engineer behind the mighty Chevrolet Camaro ZL1 has officially made a statement about the newest member of the Mustang family, saying that the GM wonderchild has encouraged Ford to come at Chevrolet with both barrels blazing. Funk Flex Find Flex On Google+