Why You Really Shouldn't Run Jet Fuel In Your CarJason Torchinsky8/30/12 4:00pm1731EditPromoteDismissUndismissHideGo to permalinkMost gearheads have probably heard stories about running jet fuel in cars for instant, magical speed increases. If you look online, the question comes up pretty often. The same goes for other exotic fuels, like aviation gasoline and Pegasus urine. So what's the truth here? Is jet fuel a magic speed-serum?