The Aero was a range of concept car studies created by General Motors as a testbed for future aerodynamic improvements to car bodies.
In 1982 the Aero 2000 was shown, a smaller two-door car, it had several unique features, such as front and rear fender skirts, a kammback design, and a smoothed underbelly.
Almost all of these features have been incorporated into modern hybrid car designs at some point, with the exception of front fender skirts.
The Aero 2000 had a drag coefficient of 0.23, but had no engine so could not be driven.
Designed by Irv Rybicki, it was to influence the 1984 Chevrolet Citation IV concept.