Speed of the Wind was a record-breaking car of the 1930s, built for and driven by Captain George Eyston. It was heavy and lacked enough power to break absolute records but had the strength to extend endurance speed records.
Eyston broke the 24 Hour record in 1935 and raised that limit during the 1936 Bonneville season, averaging 149.096 mph (239.947 km/h) for 24 hours and 136.34 mph (219.42 km/h) over 48 hours. Those records were quickly broken by Ab Jenkins at 153.823 mph (247.554 km/h) and 148.641 mph (239.215 km/h).
The car was destroyed by bombings during World War II.