Gas prices reach their lowest point in three years, with some stations selling for less than $3 a gallon.
AAA says the arrival of low-cost gas at Costco may force big-name gas stations to lower traditionally high prices
AAA Mid-Atlantic described the latest price jump, the 36th consecutive day of increases, as a "slight uptick."
The $4 cost in D.C. is significantly above the national average of $3.78 and among the highest averages in the country.
Gas prices are hitting highs because of closed refineries and others under maintenance
Gas prices have increased for 33rd consecutive days, and the Washington region is no exception to the pain being felt at the pump nationwide.
The Watergate Exxon, reliably home to the highest gas prices in Washington, appears to have closed.