[shiroiuma]

For me, it was pretty simple: I packed up and moved to a walkable city (which meant leaving the US). The only way you're going to get a walkable city out of a non-walkable US city is to completely change the zoning laws, eliminate the free parking and making driving horribly inconvenient and expensive, then go through a cycle of death and rebirth as the city largely dies out and then gets revitalized a couple decades later. I don't want to wait for this process, and I don't even see any serious action this way anywhere yet; I'll be dead of old age before there's a decent number of walkable cities in the US.