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06/12/2009 05:12 am ET | Updated May 25, 2011

Car-Free German Suburb Vauban Makes Residents Happier

"When I had a car I was always tense. I'm much happier this way," said Heidrun Walter, 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, completed in 2006, is an example of a growing trend in Europe, the United States and elsewhere to separate suburban life from auto use, as a component of a movement called "smart planning."

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