The Sunbeam Silver Bullet was the last attempt on the land speed record by Sunbeam of Wolverhampton. It was built in 1929 for Kaye Don. Powered by two supercharged aero-engines of 24 litres each, it looked impressive but failed to achieve any records.
Sunbeam's 1927 200 mph land speed record won with the Sunbeam 1000HP had been broken by 1929, and the company decided to build a car capable of reaching 250 mph (400 km/h) so as to recover it. Only aero engines offered enough power to do this, and such a car would also provide a test bed for developing a new generation of Sunbeam aero-engines.
