I understand the stringent cafe standards .cadillac should build the body style even without the v16-or 12 this body style is absolutely stunning Iam sure GM can do this Iam 47 years old I have owned 3 cadillac cars there is no other Automobile like them they perform as a Automobile should They are like afaithful friend donot allow enviornmentalist to block your dreams .go ahead build the body style and make cadillac the standard of the world again