Earlier quoted context omitted.
Part of the problem is you can’t just convert an area to a pedestrian area as people still need to be able to get there. You need to construct low cost parking garages around the area so people can still get there.
Comments like this make me appreciate living in a city that has a pretty comprehensive public transport coverage, and where bicycling is at least tolerable. The city you describe seems to be only usable by car.
We need to be honest that the folks most concerned (rightfully so) with urban car congestion are wealthy upper class people who moved TO the cities for their upperclass nature. Should we totally upend one of these groups in an attempt to solve an unsolvable problem for both groups?
Bit of rambling but I am fascinated by this problem.