If I were leader of my country, I would ban cars because they cause too much air pollution. i hate it when I'm riding my bike in the street and I can hardly breathe because of the traffic fumes. It makes me feel really ill. Air pollution causes acid rain too. It kills trees and plants. I would also improve public transport. People wouldn't need to use their cars so much then. I think people should walk more often, or use a bicycle, like me! If they did, our cities would be healthierplaces to...