Why does the car exhaust pipe spit fire? Many attentive riders will notice that many supercars, modified cars and racing cars will spit fire from their tails when shifting gears, cornering or even braking, and they will make a bursting sound, which is very shocking. Someone can't help but ask: What is the principle of the rear end of the car? Does breathing fire harm the car? Most importantly, will my family car spit fire?