In 1933, Reid Railton created the aero-engined race car known as the Napier-Railton, which Thomson & Taylor built on a request from John Cobb. Cobb primarily drove it at the Brooklands racetrack, where it set the all-time lap record in 1935 at 143.44 mph (230.84 km/h). This is permanent because the circuit was never used as a racing track again after being converted for military usage during World War II.