Works 60% the time, Everytime.
Restricting the bhp of cars available to new drivers wouldnt do a blind thing.
Each year, usually over christmas we lose alot of young drivers and I can tell you know the majority of the time the cars they are driving arent "quick" at all. Its a simple matter of experience and knowledge. Driving to theirs and their cars capabilities and the conditions at the time.
I think the issue lies in the driving teaching and test. It needs to be more thorough. I believe road safety should be taught in school on a permanent basis, not just 1 visit from a useless Policeman.
2003 Audi S3 + Go faster bits