my advice, buy a junker take him for a ride and find a little brick wall or gaurd rail and hit it at 5mph, then take him down to the police station, and have him listen to some of their stories. worst case scenario let me talk to him about the guy i saw get beheaded by a tree that he flew through when someone hit him head on when they were driving 100 mph around a blind curve and crossed the double yellow lines. i was on the fone with my friend who was on the other side of the whole road closed thing. my friend joked that the corpse looked really short on the stretcher (my friends make fun of me for being short) then i saw another emt carrying a bloody plastic bag and a smashed helmet from the field some 200 ft away ill never ever forget that nite.... anyways it seems like the only way to teach kids is to let them see and feel the pain that can be had from such incidents.....