Between 1913 and 1927, such a prototype with propeller propulsion was created by Marcel Leyat, when it became necessary to recycle the numerous existing aircraft engines. Only two are known in the world: this one and the one in the Nashville Motor Museum in Tennessee.
Due to its simple construction, the car weighs only 450 kg. With the GS engine, the Helicron is capable of over 100 km/h.
