You might not be able to register it without insurance but you can certainly buy it. Plus a significant number of drivers on the road don’t have insurance because they only pay for it long enough to register the car and then never again. There’s a reason those of us with insurance usually have the option for coverage if the other driver doesn’t.

It wouldn’t meet the safety standards. A substantial portion of the cost in a modern vehicle is the safety systems and then the emissions systems.

Looks like someone has paid attention to Andrew Branca @ The Law of Self Defense.