[Mike Peters]

Banning cars on public roadways?
I think not. Farmers run very large and very slow equipment on public roads every day. Most farmers have yellow flashing lights on their tractors and combines when out and about.
The worst thing state DMV's might require is yellow flashing lights on slower prewar cars, if driving under 40 MPH, or some such speed. I doubt that, because it is exceedingly rare to see prewar cars out on roads. Not enough of us to matter.