Cars are so important in American life that they are even used as a criterion of people’s wealth. There are three reasons why cars are so popular in America: The first is that America is so big that cars can take Americans around cheaply and comfortably.The second is that the United States has not developed an efficient and inexpensive means of mass transportation. The third is that Americans can better arrange their time by car, which makes them feel more free. I think cars are important to Americans because of the American social environment. Because cars make them comfortable, free, and there is no affordable public transportation available in the United States, they are essential to every American.In China, because of the developed railway system, which is also very comfortable and cheap, Chinese people love to drive their own cars, but we do not believe, as Americans do, that cars are indispensable