The car century was a mistake. It’s time to move on.
Cars were never necessary in cities, and in many respects they worked against the fundamental purpose of cities: to bring many people together in a space where social, cultural and economic synergies could develop. Because cars require so much space for movement and parking, they work against this objective — they cause cities to expand in order to provide the land cars need. Removing cars from cities would help to improve the quality of urban life.
The movement of significant numbers of cars through the streets will always damage streets’ social use, regardless of how quiet and safe the cars may be. Only when people can stop in the middle of the street to talk without fearing what may be bearing down on them will we have fully restored the social function of streets.