Introducing the next generation in safe and efficient RC nitro engine shutdown, the DE Racing Stopz-it.  This simple tool, disguised as a readily accessible key fob, works by either using the tip to contact the flywheel of an idling engine, or by using the plug on the side to cover the exhaust tip.  Since the method of covering the exhaust can be performed at any RPM, even the runaway car with wide open throttle has finally meet its match.