American drivers are within shouting distance of $1.50 a gallon for the first time since 2009. Thanks to a glut of oil that has spurred refiners to make as much fuel as they can, pump prices nationwide are down about 23 cents a gallon from a year ago, which is translating into almost $80 million a day in savings for U.S. drivers, according to Michael Green, a spokesman in Washington for AAA. Oklahoma has the cheapest prices in the country at $1.519 a gallon, almost 30 cents below the national average, AAA data show. U.S. prices may fall as low as the $1.60s in the next month before rebounding, according to Patrick DeHaan, a Chicago-based senior petroleum analyst at GasBuddy Organization, which tracks filling station prices. “Demand is very weak because of the time of year and supplies are the highest in a very long time.” Consumers are benefiting […]