Washington Post:
We must first remember that all cities were car-free little more than a century ago. Not all cities responded to the advent of automobiles with the same enthusiasm as the cities of the United States. In fact, some cities never did adopt the car. Venice was unwilling to destroy itself in order to build streets wide enough for cars, and therefore has never had them except in a sliver near the mainland....
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.
Streets are also our most important public social spaces. Most cities in Europe now acknowledge the terrible damage cars have done to this use, which is why cities all across Europe are discouraging automobile use in favor of walking, cycling and public transport. This is most clearly illustrated in Oslo, the first European capital to announce that
its downtown core will soon be made car-free in order to reduce carbon emissions and improve air quality, as well as to improve conditions for pedestrians and cyclists...
Removing vehicles from our streets would make urban life cheaper, safer, quieter and more pleasant. Repurposed parking spaces and, in some cases, travel lanes would provide ample land for walking and cycling, plus any essential street-running public services, such as light rail, trash collection and emergency services. The surplus land can be devoted to public purposes — imagine Manhattan with sidewalks 15 feet wider and room for sidewalk cafes.