Gas prices in the D.C. metro area are down 2 cents from a week ago.
Gasoline prices in Virginia have increased an average of seven cents per gallon over the past week.
Gas prices in the Mid-Atlantic region are down three cents from a week ago.
The D.C. fire department says an ambulance was taken out of service while on a run to the White House because it ran out of gas.
Gas prices have been declining over the past week after increasing steadily earlier in July.
Virginia motorists are paying 39 cents more a gallon for self-serve regular gasoline than they were a month ago.
Government geologists say the Utica Shale formation holds about 38 trillion feet of recoverable natural gas.
Check out these tips from EcoMedia on how to save energy on the road, which in turn could help you spend less on gas.