In 1990 bicycles carried 70 percent of travelers in Shanghai. Now it is no more than 15 to 17 percent. Last month the city government of Shanghai banned bicycles on all major roads. Automobile sales in China are growing at a rate of 50 percent yearly. Bus service is considered to be of good quality and a subway network is being built. Upon completion it will have more miles of track than the subways of New York City. China has 7 of the world’s 10 most polluted cities. Here is the full story.