It's been a while since my wife and I had some fun with a car. This time we took the BMW diesel, because the tailpipe has great vibrations. You can see my wife's feet on the gas pedal while I kneel behind the car with my cock in the exhaust pipe.
My wife gently revs the engine until I am about to come. At the point she pushed the gas further and I had an incredible orgasm, shooting a giant load into the exhaust pipe. But with my wife revving harder, all my cum came flying out again, covering my cock and stomach.
See for yourself!