Gasoline prices are seen at a Valero service station in Lyndhurst, Ohio on, Monday, April 11, 2011. With the price of gas above $3.50 a gallon in all but one state, there are signs that Americans are ... more 
Gasoline prices are seen at a Valero service station in Lyndhurst, Ohio on, Monday, April 11, 2011. With the price of gas above $3.50 a gallon in all but one state, there are signs that Americans are cutting back on driving, reversing a steady increase in demand for fuel as the economy improves. less 
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Associated Press | Photo By Amy Sancetta
Mon, Apr 11, 2011 2:55 PM EDT