text: The first of many reasons why we should limit car usage is because of greenhouse gas emissions. "Passenger cars are responsible for 12 percent of gas emissions in Europe. . . and up to 50 percent in some car-intensive areas in the United States(Source 1)." This just shows the evidence by the future if this keeps going like this the Whole entire planet would be all polluted which would make living conditions harder than they have to be. Heidrun Walter, a media trainer and mother of two states "When I had a car I was always tense. I'm much happier this way(Source 1)." Looking at this quote tells me that she must have been stressed with the car, maybe it was because of the traffic or the gas bill who knows, but she does feel happier without it so she must feel more at ease that her area is not cramped up with cars. In Vauban, Germany if you own a car where the tram to downtown Freiburg runs, there are only two places to park-large garages at the edge of the development, where a car owner must buy a space, for $40,00, along with a home. Well sign me up with a bike or running shoes because I don't have that kind of money to spend just to live in a area with no cars.