A service station employee changes the price tag for gasoline at their station in Los Angeles, California, on November 20, 2008. The average price of a gallon of self-serve unleaded gasoline in Los Angeles County fell 3.3 cents on November 20 to $2.327, nearly half the record high of $4.626 set on June 21, as falling crude oil prices point to a continuation of lower pump prices. (Xinhua/AFP)