30. Callaway Sledgehammer C4 Corvette
Rives Callaway established Callaway Cars in 1977, long after the muscle car craze winded down and high horsepower performance machines were just a thing of past. He specialized in producing turbocharger kits to be installed mostly on European cars. His knowledge, expertise and start of the turbo era perfectly lined up and the company really took off. In order to show the real potential of twin turbo C4, Callaway produced the legendary Sledgehammer Corvette, a highly modified and heavily turbocharged 1988 Corvette which had 898 HP and could go over 250 mph!
These are the top most unusual and innovative American performance and muscle cars available today. But, car fans know Detroit is working on more of them to offer in the future. Who knows what those designers are thinking up now.