Drivers pass by gas prices that are displayed at Valero and 76 gas stations on Feb. 9, 2015, in San Rafael, Calif. Justin Sullivan/Getty Images hide caption

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Fill It With Regular: AAA Finds Millions Of Drivers Waste Money On Premium Gas

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A motorist who found an Atlanta gas station had run out of fuel calls a nearby gas station Monday to see if they have any left. Gas prices spiked and drivers found "out of service" bags covering pumps as the gas shortage in the South rolled into the work week, raising fears that the disruptions could become more widespread. David Goldman/AP hide caption

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Falling oil prices have put downward pressure on gasoline prices, now averaging $2.65 a gallon — about 85 cents cheaper than a year ago. Gene J. Puskar/AP hide caption

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Oil Prices Tumble Again, Hurting Drillers But Helping Drivers

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A customer fuels his car at a gas station in Pembroke, Mass. Economists say Americans have been slow to spend the money they saved from lower energy prices. Stephan Savoia/AP hide caption

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You've Saved Money At The Pump. Why Aren't You Spending It?

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Traffic moves along Route 21 in downtown Newark, N.J., where a gas station lists the price for regular unleaded gasoline at $1.72. Julio Cortez/AP hide caption

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Looking For Even Cheaper Gas? Go Generic At An Indie Station

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Gas prices are displayed on a board at a Hess station in Hoboken, N.J., Sunday. Lower oil and gasoline prices are giving relief to consumers who recently seemed about to face the highest prices ever. CX Matiash/AP hide caption

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The new rules' would reduce harmful emissions, the EPA says. David Paul Morris/Getty Images hide caption

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NPR's Richard Harris reports

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Parts of New York were also suffering fuel shortages, including Staten Island, where there were long lines for gas Friday. John Moore/Getty Images hide caption

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Gas prices in France have topped more than $8 a gallon in some areas. In this photo from January, a woman rides her bike past a gas station in Paris. Joel Saget/AFP/Getty Images hide caption

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Sign of the times? Prices at a gas station in San Francisco on Friday. Paul Sakuma/AP hide caption

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Spike in prices

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