chart gas prices

The national average price for a gallon of unleaded dropped to $3.509 on Friday. That's a 15-cent drop from the price on July 4....it's a 35-cent drop from June 25. Americans are already paying less than $3 per gallon in some rural areas, including two gas stations in Texas, five in Virginia, four in South Carolina, one in Alabama, one in Mississippi and 16 Oklahoma. Someone told me there was gas for $2.99 in Desoto, MS. What is the lowest price that you have seen/paid? And where is it?