Helicopter Technik München (HTM) Sky-Trac 4 Aerocar
Wagner Sky-Trac 4 Aerocar
The Rotocar III has developed into the Aerocar. This has a 4-seat cabin, a twin tail assembly, and four road wheels hydraulically driven from the Oredon IV engine mounted behind the rotor pylon.
Wagner built a prototype (D-HAGU) Aerocar roadable helicopter, powered by a 260hp Franklin 6AS-335-B engine, which had a complete body shell. It was first flown in 1965. It was subsequently rebuilt with a Turbomeca Oredon turbine engine.
After extensive development work had been carried out, the Wagner designs were passed to a new company, Helikopter Technik Munchen (HTM) in 1971. HTM abandoned the Aerocar.