I think many American cities are in a sort of local optima with regard to cars. Any change that makes walking more viable will reduce the utility of everyone us

I think many American cities are in a sort of local optima with regard to cars. Any change that makes walking more viable will reduce the utility of everyone using cars. Converting the freeway right-of-way to rail would take a long time and make lots of people mad in the meantime. A car can get you places, yes. But it also requires money to purchase, maintain, insure, and fuel. Many people are not great at driving them, killing people in the process. People get fat because they never have to walk anywhere. There is a cost for this convenience. > Zoning is a choice by a community to preserve the lifestyle and neighborhood character they have built, and there's nothing wrong with that. Sure, in isolation it makes sense. But then almost every city says the same thing. Then sprawl is the only choice for new people. And the “neighbor character” you have preserved is “only rich people are allowed to move in here”.