U.S. Gasoline Glut Keeps Pump Prices on the Road to $1.50: Chart

U.S. gasoline inventories last week jumped to the highest in weekly government data going back to 1990. The glut has helped push gasoline futures below $1 a gallon. That also means drivers are paying less at the pump -- the average cost nationwide fell to $1.783 a gallon Tuesday, according to AAA, the lowest in seven years.

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