The Serpollet Tricycle was one of the first industrially manufactured motor vehicles; it was designed by Léon Serpollet, and first presented in 1886. The tricycle possessed an oil-fired boiler and a single-cylinder engine with poppet valves and crank cases. The steam tricycle of 1899 produced about 5 HP with its 4 cylinders. It achieved a maximum speed of about 25 km/h (16 mph).