text: To start, everyone would know that the main reason is because of the state of our enviroment. There's a lot of pollution going out there in the world and it's not safe or natural. To give an example, according to the article, written by Elisabth Rosenthal, "In german Suburb, Life Goes On Without Cars", passenger cars are responsible 12 percent of greenhouse gas and fifty percent in car-intensive areas in the United States. To exemplify, greenhouse gases is one of the causes for the changes around the environment. They're not the good changes either. To support this, the article "Paris bans driving due to smog", written by Robert Duffer, shows an example of Paris and China banning car usages due to their high pollution and smogs. Robert Duffer states, "Congestion was down sixty perent in the capital of France, after five-days of intensifying smog...[The smog] rivaled Beijing, China, which is known as one of the most polluted cities in the world." In other words, polllution can hold a great affect of people trying to go to work, have fun, or even visit someone. Not only is change in the enviroment is bad but some people can just live without the use of transportation.