text: To begin with, there are advantages to limited car usage because of pollution. Paris enforced a partial driving ban to clear the air of the global city. Congestion was down 60 percent in the capital of France, after five-days of intensifying smog, the smog rivale Beijing, China, which is known as one of the most polluted cities in the world. Diesel fuel was blamed, since France has a tax policy that favors diesel over gas. Diesel make up 67 percent of vehicles in France, compared to 53.3 percent average of diesel engines. Paris has more smog than other European capitals.