text: First of all, the Earth is beautiful and the people on it need to take better care of it. For example, just one day without the use of cars in a city, allowed them to construct bike paths, new sidewalks, and reduced traffic jams. Fuel from cars will polute the air and cause smog. If everyone continues to use cars as much as they do or more, there will be no way to clean all the air. When Paris banned cars for a while, smog was cleared and reduced by a lot. Limiting car use will not save the Earth completely, but it will help very much.