How about make driver training a compulsory subject in school from as early as year 7? There would be ways to implement it and have progressions in car types/power until it's a proper car. You could simulate traffic conditions and all sorts of stuff but more importantly have class sessions which give the kids an early introduction into the operation of a car, limitations and most importantly the injuries suffered when an accident occurs at 10km/h over the limit 20,30,40,50 and hitting at different points of the car. No babying, no Hollywood re enactments! The gruesome truth.
I got to see a couple of months ago a police video of an incident where a person dropped an oxygen bottle off a truck and it ruptured. I know all the people out there who do any welding will know what happens when they go up! Saw exactly what happened to the poor bloke and it wasn't pretty.
Even the damage this causes to families and peoples lives and what about the poor emergency services who have to turn up to these things time after time and notify family!
We need realistic options not stupid knee jerk reactions like taking cars from P platers, half the cars they drive are their parents anyway!