How would this work when our cities have been so heavily developed to favor the automobile? I'm for road users paying for the roads or access, but public transit is so lightly used in most of the US and there's so little existing infrastructure that it's at a severe disadvantage and can't take advantage network effects or economies of scale. Instead of a train near my house, there's an interstate highway. Our cities are already so sprawling and NIMBYism so strong. I wonder if it's too late for transit.