text: 70 percent of people in Vauban do not have a vehicle and 57 percent sold their car to move to Vauban. As we all know cars take a toll an the atmosphere itself by adding greenhouse gasses to the atmosphere. 50 percent of greenhouse gasses in the United states are emited through cars, but on the other hand cars are responsible for only 12 percent. It seems to be that the car-less cities tend to be declining the negative effects in the atmosphere.