there is a guy on the FS forums selling zippo lighters. Purchase one of those and some gasoline. Next time JOJO brings out his toy, saunter over there and say, "Can I try for a spell?" Drive the little car close to you and make a remark, "Looks like it needs filling up!" Then carefully douse it in gasoline, (carefully hidden in a small appropriate container in your robe.) Take out the freshly purchased Zipp, preloaded with new flint and Ronsonol, and set it a flame. Then, take the control and send it out into the street and watch JOJO chase after it. Perform zizag patterns and watch him maneuver until the car melts into disfunction. When he comes back to you, in angst and tears, say to him "What have you learned from this?" Give him the freshly purchased Zippo from ATOT FS fourum as a token and walk off knowing you have taught JOJO a valuble lesson.
JC