The Aerocar was developed in the era of space-age futurism, and looked the part. It looked slightly like the Jetsons flying car, with a large bubble cockpit, tailfins, and disproportionately small wheels for a car. It was developed from the Rotocar III design which was based on the Sky-trac 3 helicopter. The helicopter used counter-rotating rotors. On ground propulsion to the wheels was through a hydraulic linkage to the engine.
A prototype with the registration D-HAGU was completed and flown in 1965. The Franklin 6AS-335-B engine was replaced with a 134lb, 420shp Turbomeca Oredon turbine engine with a front mounted gearbox. The design was sold to Helikopter Technik Munchen (HTM). HTM suspended development of the Aerocar in 1971.