I live in the least car friendly city in Europe, a city where I would get fined if I drive from one side to the other. Yet I still need to own a car.
Not needing a car on a daily basis is quite different from a blanket ban of cars in a city, which is just out right stupid. But I see you have put as much thought into your post as the GP.
In spite of what you seem to think, the trend in many cities is to reduce and gradually remove cars from the inner city.