text: To start off, Smog is one of the main disadvantages of owning or being in heavily populated area where they use cars frequently. Smog is when the cars emit there gases out of there tailpipe, and get traped in the atmosphere causing people to have problems breathing. Articles in the city of Paris in France said that they had to ban cars due to the smog in the atmosphere. They hit a near record of air pollution and stopped people form using there cars on certian days to clear the smog from the atmosphere. On that five day period of the intensifying smog actually rivaled the place of Beijing, China which is known to be one of the most polluted cities in the world. Once the smog cleared they rescind the ban of car usage only to be a the same place there are going to be now if they keep on using cars.