text: Residents in Vauban, Germany are limiting car usage they're using bikes and most of them enjoy the walk. Most passgeners don't know that their cars and them are responsible for 12 percent of greenhouse gas emissions in Europe and some car-intensive areas in the United States vary up to 50 percent. You wouldn't want to be blame for such an act. As a matter of Heidrun Walter commented ,in Source 1: "