Today we often forget that prior to World War II, every city in America was built for easy walking and biking. In fact, the idea of living in a walkable place is nothing radical. What was radical was the program we undertook to build an entirely new type of human life. We built networks of roadways and freeways like nothing any society had ever seen before. We tore down entire neighborhoods to accommodate these roads as well as the parking lots and garages required by the cars that would travel these roads; at the same time, we ripped out the tracks for streetcars and trains.