Speed of the Wind was built for and driven by George Eyston. Powered by a V12 Rolls Royce Kestrel engine it competed in endurance racing. In 1935 he set a world record for 24 hours averaging 140.52mph. In 1936 he returned and raised the 24 hour record to 149.096 and then set a record of 136.34 for 48 hours. The car was destroyed in bombings during World War II.