Shelby EXP500 Green Hornet – Price: $1.8 million (not sold)
Although it wasn’t the only one, the Green Hornet features the most innovative features, like a 390 V8 with fuel injection, unique disc brakes on all four wheels, and independent rear suspension. With this layout, the Green Hornet was a capable car that handled and stopped better than any other sports car. Unfortunately, the cost of producing those features was too high, and Ford and Shelby decided to go with more conventional technology.