Oh there's a way around that. Places like Lisbon and London already have time periods where older vehicles cannot enter parts of each city without paying a fee. It's only a matter of time that they're banned altogether for "the sake of the environment".
It would increase the value of older cars.
Or create the conditions for the rise of electric hotrods.
Seems likely. "We're all Cubans now."
Many states will ban the purchase of used ICE vehicles eventually just as they have deadlines for banning new ICE vehicle sales, or at least make the process so onerous they might as well have banned them.
Maybe, maybe not. Right now, though, that isn't a reality.