I want good urban design, but I realize that converting our existing construction is tremendously expensive and fraught with project risk. Our car-centric citie

I want good urban design, but I realize that converting our existing construction is tremendously expensive and fraught with project risk. Our car-centric cities and suburbs cannot easily be undone. While it would be nice to have additional mass transit lines and increased density, all of these things are decades away at best. Edit: Therefore I am not against improving things for cars in the meantime. I don't think this is a zero-sum game.