Sticking foot-pedals and floor mats accounted for some of the mishaps, but most were caused by “pedal misapplication”, or motorists mistaking the accelerator for the brake.

Each sub will have one or two pilots onboard who use pedals or some other propulsion system to guide their vessel across the 328-foot (100-meter) submerged racecourse the fastest.

Dave Thomas: A helicopter has four main controls: foot pedals, collective pitch lever , cyclic, and throttle. The foot pedals control the tail rotor.