After talking to a few people, I would have to agree that starting on a motorcycle is a great idea. I backed up and punted and bought my son a JR50 a few weeks ago. It has the wheels for tots training wheels, and he is scared to death of it after riding the quad!! The training wheels are stable enough that I can sit on the bike and not turn it over, but it still teeter totters enought to put some fear into a new rider. After a few weeks of working with him, he enjoys riding it a little more. We went to a practice motocross track that a friend of mine has yesterday and the fear factor set back in- he didn't complete an entire lap before he wanted off and back on the quad. I dont want to push him and scare him off completely, so I let him ride the quad on the track. He was just as scared because of the size of the jumps. Not a bad result for his first crack at MX, after all he is only three. By the way, if anyone buys a JR50, remove the restrictor in the exhaust before you try to ride-they will hardly run with it in.