I knew somebody who did exactly the same thing as that kid. It was the last thing he ever did, because he crossed into the path of a motorbike.
If you are saying that this has happened to this kid before and I was his parents, the first thing I would do is to take the bike off him and bury it. At the side of the road I would of probably of given him some advice to get rid of it, because the way he was riding at some point in the near future he is going to end up dead.