text: Passenger cars are responsible for 12 percent of the greehouse gas in Europe... and up to 50 percent in some car intensive areas in the United States. If people who live near stores would use bikes and would walk to the store instead of driving it would help minimize the expansion of smog. After five days of the partial driving ban in Paris the capital of france congestion (traffic) went down 60 percent, the smog rivaled Beijing, China, which is known as one of the most polluted cities in the world. Also an advantage for limiting the use of cars is you save on the money you would spend on gas. you would be able to spend it on yourself or on important things like bills and groceries.