[taoistextremist]

> By that logic, we should limit owning and operating a motor vehicle to special car parks because we're scared of the mental fitness of our fellow citizens. Why take the risk?

We do regulate where you can drive a car, though. Large swathes of cities can block off the use of cars in certain areas, and of course you're only allowed to drive them on the road, according to strict regulations. We even have a licensing and registration system for cars that says you can't drive one unless you pass a test, and that your car must meet certain specifications to be road-legal and actually get registration.

It would also be extremely difficult to impose the kind of regulation we have around cars, on guns. It's extremely unpalatable politically. While we ban certain modifications (though a lot of those bans have expired) typically there's no mandatory registration, save for some states.