text: Initially, limited car usage can play a major factor in pollution for the world. In "Paris Bans driving due to smog," it says that 147 micrograms of particulated matter was fount in London. This is causing sickness and illness in alot of countries. If we would reduce car usage there would be alot less smog and greenhouse gases in the air that we breathe every day. Who wants to live in a cloud of dust?