Affected by the global financial crisis, the domestic car sales in 2008 had been declining since the beginning of the year, with a temporary rebound shortly after the off-season sales in July. In 2009, the revision of the Commodity Tax Act enabled the commodity tax reduction of new sedans, small trucks, and small passenger-cargo vehicles with engine displacement under 2,000 c.c. before the end of the year, and stimulated consumers’ purchase intention of cars. At the same time, the gradual recovery of the global economy maintained the growth of the domestic car sales. In response to the expiration of the commodity tax reduction program by the end of 2009, consumers were attracted to trade in their old cars, making the car sales reach 29,200 in December, the largest monthly sales since January 2008 (See Figure 1). It also pushed....