根据短文理解，回答问题

    Bikes and cars are two important things. Many Chinese people have cars now, but most Chinese people still like to ride bikes. Do you know why?

    We all know that the bike can't go quickly, but it's easy for people to buy and ride it. As for the car, it needs too much money.

    Most Americans live far from the center of cities or their working places. So they need cars to go shopping or go to work every day. Most Chinese people live near their working places, so they don't need cars to go to work. And it's good for the environment(环境) if people stop driving. So there is a day called “No-Car Day” on September 22^nd every year.

    For me, I like to go to school by bike. It is easy and healthy.