Dodge Charger III (1968)
The success of the Charger inspired Chrysler designers to develop the idea of a Dodge performance model. The original Charger had power, performance, and countless racetrack wins. But it was still a big, heavy, and not very aerodynamic muscle machine. The 1968 Charger III concept was something very different (via Supercars).
The Charger III was no longer a muscle car but a pure two-seater sports machine. It was lightweight. It also had compact dimensions, a low profile, and several unusual features. There were no conventional doors, but the whole top of the car opened and allowed access to the interior. The steering column tilted along with the steering wheel to make entry more comfortable. There were massive airbrakes on the back of the vehicle, similar to the ones on the airplanes, which deployed under heavy braking. The whole car was highly futuristic, which doomed it from actual production.