In many parts of the world good public transport already exists, and had existed for decades. An inability to build good public transport in cities seems to be a uniquely American problem.

I could certainly see cities like London banning ICE cars within their centres within 5 years, without much impact on poorer individuals. It’s already financially prohibitive to drive into the centre due to the congestion charge, and most people would consider it insane to drive due to traffic, and the fact that public transport is about twice a quick.