Gasoline prices are likely to average $2.33 this year, off 31% from 2014, according to the U.S. Energy Information Administration. Regular sold for $1.68 a gallon in Dellwood, Mo., on Tuesday. Photo: Getty Images The global glut of crude oil is turning into a U.S. glut of gasoline. As oil prices have tumbled during the past few months, U.S. refiners have been sucking up as much of the abnormally inexpensive crude as they can, turning it into gasoline, diesel and other fuels. Prices at the pump have plunged to almost $2 a gallon, the lowest nationwide average in more than five years. Even though U.S. drivers are filling their tanks more often, they can’t keep pace with surging gasoline supplies. So a lot of the fuel that refiners are producing is sitting in storage tanks. Gasoline inventories stood at 240.3 million barrels as of Jan. 9—the highest they […]