Jaspers

Honestly, could anyone who have driving experience tell me, how could all these unbelievable killers keep claiming they mix up the brake with the gas pedal?? I mean this could never happen, think about it, your right leg already on the gas pedal, and when you want to stop or slow down, yourself and your leg will automatically know you have to switch to the brake pedal isn't it?? It's either one or the other, how could they mix them up really??