SAN FRANCISCO, CA - APRIL 27: A sign showing the price for gasoline is displayed at a Shell gas station on April 27, 2011 in San Francisco, California. The average price for a gallon of regular ... more 
SAN FRANCISCO, CA - APRIL 27: A sign showing the price for gasoline is displayed at a Shell gas station on April 27, 2011 in San Francisco, California. The average price for a gallon of regular gasoline in California increased 1.2 cents to $4.217 getting closer to the all time high of $4.588. (Photo by David Paul Morris/Getty Images) less 
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Getty Images | Photo By David Paul Morris / Getty Images
Wed, Apr 27, 2011 8:41 PM EDT