Gas prices below $4.00 per gallon are displayed at a gas station on July 12, 2012 in San Francisco, California. Oil prices fell amid worries that Washington will not act in time to stop the United

... more 

Gas prices below $4.00 per gallon are displayed at a gas station on July 12, 2012 in San Francisco, California. Oil prices fell amid worries that Washington will not act in time to stop the United States from going over the "fiscal cliff" by an end-of-year deadline.

less