[slothtrop]

Trivially resolved through zoning reform. Rhetoric surrounding "banning cars" will not deter sprawl or achieve anything of note, it will just be considered fringe fanaticism.

> unsustainable

The global population growth rate is going to stall, and by extension, cities will cease to grow. Sustainability is a moot point.

[JAlexoid]

> Rhetoric surrounding "banning cars"

Which I never engaged in. Banning cars is nonsense and is counter productive.

> The global population growth rate is going to stall

If we give every person a car to drive every day, today - that's enough to make it unsustainable. That's the whole point. We don't even have to have any growth in population.

[slothtrop]

> If we give every person a car to drive every day, today - that's enough to make it unsustainable.

Leaving aside that we aren't, sustainability necessarily implies perpetual increase. This hypothetical doesn't make sense. If the demand were there to supply everyone with a vehicle, we would, the materials are there. That would of course result in environmental encroachment, but not indefinitely. Plus vehicles on the road will all be EV in the coming decades.