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In the early 1960s, deployment of rocket-powered ejection seats designed for use at supersonic speeds began in such planes as the Convair F-106 Delta Dart. Six pilots have ejected at speeds exceeding 700 knots (1,300 km/h; 810 mph).
An average Formula E car has a power of at least 250 horsepower (190 kW). The car is able to accelerate from 0â100 km/h (0â62 mph) in 3 seconds, with a maximum speed of 225 km/h (140 mph). The noise levels are approximately 80 dB (SPL), which is more than an average petrol car which produces about 70 dB.