I’m sure they only drive on privately owned roads they’ve negotiated with the owner to be allowed on, right?

Because believe it or not if you own a vehicle and only ever drive that vehicle on private property in most states you can do that without following any government rules.

Like, you’d have to transport that vehicle to the property with another vehicle that is properly following the state’s rules.

And of course you’d have to bring your fuel in from outside. And any spare parts…

(I’m sure some states have restrictions even on private property only operation)