text: An advantage to reducing car usage is a more benifical enviroment and a better overall health standard. "Passenger cars are responsible for 12 percent of greenhouse gas emissions in Europe... and up to 50 percent in some ... areas in the United States." (Source 1). Personal cars directly contribute to greenhouse gas enissions and by cutting down personal car usage and encouraging the use of car pooling and public transportation we can decrease greenhouse gas emmmisions. Also walking and biking to your destination instead of driving helps encourage healthy living and habits as well as exercise.