> current regulation allows people to buy vehicles which go 60MPH+ on just two wheels, no airbags, and no doors at all

Are you talking about motorcycles?? Yeah nobody thinks motorcycles are safe. But the issues with them are inherent to the form, not created by the design.

To be clear, i also think motorcycles should be regulated better. The tiny signal lights on a honda cbr are obviously a creation of valuing design over safety.

> Just let manufacturers innovate...

We did. They innovated door handles that depend on the car electronics functioning, headlights that blind other drivers, and monthly subscriptions to unlock heated seats.