Corvette CERV III
As we all know, Chevrolet has been playing with the mid-engine idea for the Corvette since the ’60s. But in the early ’90s, it looked like it would finally present the road-going production version. When the 1990 CERV III concept debuted, it was stunning (via Top Gear).
It was an impressive supercar with 225 mph top speed, all-wheel drive, special brakes, and 650 HP. The prototype looked very mature, and everybody expected that Chevrolet would introduce the CERV III as a production model. But unfortunately GM decided not to.