The concentration of particles less than 2.5 microns in diameter reached 700- 886 micrograms per square meter in Beijing in Jan 2013, 500 is routine. The World Health Organization says a level of 25 micrograms per square meter is safe, above 300 poses risks calling for one to stay indoors. This is the high cost of rapid motorization of China and lack of strict pollution control laws and enforcement for industry. The pace of car sales in the last ten years was extremely fast and unprecedented in comparison to Europe, the U.S. and Japan in a similiar period of development.