A Chevron station displays the price of the three grades of gasoline in Miami, Friday, March 16, 2012. Gasoline prices rose again Friday and are now averaging more than $4 in six states plus ... more 
A Chevron station displays the price of the three grades of gasoline in Miami, Friday, March 16, 2012. Gasoline prices rose again Friday and are now averaging more than $4 in six states plus Washington, D.C. Retail gasoline prices were up a penny on Friday to a national average of $3.831 per gallon, according to AAA, Wright Express and Oil Price Information Service. (AP Photo/Alan Diaz) less 
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Associated Press | Photo By Alan Diaz
Sat, Mar 17, 2012 9:29 AM EDT