Rolls-Royce Limited owned a British luxury-car and aero engine manufacturing business founded in 1904 by Charles Stewart Rolls and Frederick Henry Royce. Rolls-Royce Limited was incorporated on 15 March 1906 as a vehicle for their ownership of their Rolls-Royce business. Their business quickly developed a reputation for superior engineering quality, "best car in the world", building on F H Royce's existing standing. Rolls-Royce became a leading manufacturer of piston aero-engines after it was brought into building them by the First World War. From 1940, Rolls-Royce participated in the development of the jet engine and built for itself, and retains, a pre-eminent position in aero engine development and manufacture for use in defence and civil aircraft.