Regulation is one way, but parents are a much bigger influence. My dad made it clear I'd have a 4 cylinder or nothing, and he was paying. In fact, he made it so abundantly clear that my first four cars were all 4 cylinder. (And we're talking 70s-era bangers, not the modern high-revving variety.)

My first car was a 1971 Renault 12 ($800 all up - money well spent), second car was a Cortina TC auto with oodles of OHC 2L action. I picked up 3 speeding tickets in 12 months and decided to slow myself down .. so I bought a VW Kombi van.

Sure enough, no speeding tickets. Next car was a horrible lemon, an Escort Mk2 1.3l auto. It had a bright green metallic paint job, cost me over 3 grand, and was lucky to make 80 on the freeway, downhill with a tail wind.

After the Escort I got an HJ Kingswood 202 with the bench seat & three on the tree. I loved that car - big, roomy and slow.

By the time I got a VN commodore I was over 25 and my sensible brain cells had finished growing. I was married, we'd just bought a house, and I picked up the last speeding ticket I've had to date ... around 1993 or 1994.

I've always done my insane driving on the PC, from Chequered Flag and Pole Position in 1983 to rFactor, Grid and GT Legends now. Much cheaper, less stress, and the accidents and prangs are easier to walk away from.

I do agree with power restrictions in theory, but they'd have to be very harsh in practice. E.g. no bigger than 1.3l, speed limited to 120, no after-market addons, etc. Shopping trolley on wheels.