Fark ups also hit cafes, pedestrians, cyclists and that's just naming the ones I've seen.. Frankly the power of the car doesn't matter when it hits something.. It's the momentum of the car.. Any car can leave the road at 100km an hour and hit a tree and the power of the engine makes no difference to the outcome of the crash.. Higher power cars just allow us to get to stupid a lot quicker than most.. Randomly enough my professional opinion is that P Platers in high power cars aren't that dangerous (but I don't think burnouts are dangerous either - that's not saying that I think they should be done on public roads though). Higher power or low power you're gonna get a Muppet who wants to see how fast he can go.. High power maybe more unstable with quick acceleration but if they lose it under 60 the severity of the accident will be a lot lower.. Biggest thing is about teaching them that if they want to be a knob, don't be a knob with people around or passengers in the car.. You'll never stop young people (and some old people) having testosterone moments.. But if you can educate them to minimise the collateral damage then you're making some headway..