Driving a car isn't outlawed in Vauban, but there are serious (I mean serious) rules in place to encourage alternatives to driving. For example, an annual pass for the tram is free, while a parking space costs $23,000 (yes, twenty-three thousand U.S. dollars). Are the incentives and dis-incentives working? The Christian Science Monitor reports that there are an average of 150 cars per 1,000 residents in Vauban versus 430 per 1,000 in Freiburg (and 640 per 1,000 in the U.S.).
The green lifestlye goes beyond cars in Vauban, with a wood-chip energy plant operating since 2002 and solar collectors and photovoltaic cells quite common in the town.
[Source: World Changing]