text: "Congestion was down 60% in France after 5 days the smog rivaled in Beijing, China, wich is known as one of the most polluted cities in the world." (as Robert Duffer says in pragraph). The pollution can spread and make it worse some where else but be pollution free there. In france diesel feul is to blame for their pollution 67% compared to 53.3% of gasoline. Not using cars for only just a small amount of time can get rid of much of the pollution. Some people say its more stress free to not have cars around.