> In practice, many of the cities with the highest housing costs are strongly anti-infrastructure and anti-transport. (What good is a self-driving car if it's getting stuck in the same-or-larger traffic jam everyday?).

These cities would still be better off with SAE Level 4/5 and inter-communicating cars, which should reduce the frequency of traffic jams significantly. Traffic jams are almost ALWAYS caused by human error at some point in the chain.