The Four-Rotor Corvette was a beautiful mid-engined Corvette concept with gullwing doors and great proportions that had the misfortune to be powered with not one but two Wankel engines producing a combined output of 420 horsepower. GM had paid a small fortune for the right to develop the rotary engine and was eager to link it to its most prestigious sports car. Bill Mitchell liked this design so much that he decided to garage it and wait for a better time to bring it back to the public light.