Here in GB, there are databases of all vehicles insurance, tax and MoT (roadworthiness testing). The police set up cameras reading every number plate (called ANPR) and checking each against the databases as well as checks that the owner / likely driver is not wanted. They then stop any offenders up the road - and cars are siezed and crushed after 7 days if not reclaimed. Of course the criminals just find a car similar to theirs and make duplicate registration plates (cloning).
Interesting thinking on seatbelts. I think in US you used to use just airbags and seatbelts became a secondary security measure - hence why I guess some may forget them. Here, seatbelts came first (1965 or 1966 I think) - and airbags are secondary - which is why some European cars will say airbag SRS - secondary restraint system.
Here you can get medical exemption for seatbelts, but you can also get religeous exemptions for the motorcycle crash helmet laws. Should it be freedom of choice (helmets and seatbelts)? My view is that no-one has the right to deprive someone else of a limited hospital place.
J