I am for a total car ban in city centers around the world. However, this is not a policy that activists today can seriously propose to a city council: consider that even in the ground zero of the Urbanist movement, Amsterdam, cars are still allowed in the city center.
Even though I would prefer a total car ban, I am not going to oppose intermediate steps like a triple tax on oversized vehicles, because I'm not going to let my dreams of a perfect city get in the way of improving society somewhat.