FILE - In this file photo taken March 8, 2011, gasoline is dispensed at a station in Oakland, Calif. Gasoline pump prices across the U.S. fell slightly Tuesday, March 15, for the first time in nearly ... more 
FILE - In this file photo taken March 8, 2011, gasoline is dispensed at a station in Oakland, Calif. Gasoline pump prices across the U.S. fell slightly Tuesday, March 15, for the first time in nearly a month to a national average of $3.556 per gallon. Prices are still higher than ever for this time of year. less 
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Associated Press | Photo By Ben Margot, file
Tue, Mar 15, 2011 12:51 PM EDT