text: Heidrun Walter said that,"When I had a car I was always tense. I'm much happier this way". A media trainer and mother of two,as she walked verdant streets where the swish of bicycles and the chatter of wandering children drown out the occasional distant motor. Vauban's streets are completely "car-free". Car Ownership was allowed,but there are only two places to park-Large garages at the edge of the development,where a car-owner buys a space,for