Who is credited with the invention of the rotary internal combustion engine, introduced by NSU in their "Ro 80" in 1967 and used by Mazda in their "RX"models, the first of which, the RX-2, was introduced in 1970?
In 1885, who was the first person to attach a petrol fuelled internal combustion engine to a bicycle at Bad Cannstadt near the River Neckar?
Engine
