text: Secondly, the less people use vehicles, the less air pollution is going to be created. For instance, Paris issued a driving ban in an effort to "clear the air of the global city." Duffer says, "Congestion was down 60 percent in the capital of France, after five-days of intensifying smog..." The smog that affects Paris is also known to "rival" with Bejing, China, one of the most polluted cities in the world. By banning car usage for a day, the air had a chance to breathe and is overall healthier for the people that live in that area.