Americans like to go out by car. Although more and more Chinese own cars, most Chinese still like to ride bicycles. This is determined by a lot of factors.   As we all know, the bike advances slowly by manpower, but it can be placed where it is comvenient. However, as for the car, although it can run fast by engine, it must be parked at parking lots.   Most Americans live in the suburb which is Far fi'om urban areas and their working places. So they need cars to go shopping and go to work. And they also like traveling far. Thus a car brings them great convenience. On the contrary, most Chinese live near their working area and markets. They don' t need a car to go to work or go shopping.   I would like to ride a bike,because it costs little and is easy to use and because a bike won' t cause pollution, which is most important.