Ferrari 288 GTO
The 288 GTO was designed to compete in the same class as the RS 200 on the road racing side of things. That the class was cancelled before the car was ready is one of history's twists of fate. Instead, it was a 400 hp beast that was the fastest car in the world when it came out, at 189 mph. Just as importantly: much of the car's mechanical bits formed the basis of the F40.