I know it says that it isn't for ground(cars) but we do use almost any rc unit up here in the middle of nowhere(LOL) I'm about 75 miles from the nearest place where there are rc'ers. We have maybe 3 guys in a 30 mile radius who are into anything rc and none of us are members of any rc club or association. So technically I could plug it into the elevator jack or put a centering spring on the throttle stick