Drivers will pay the highest gasoline prices this summer since 2014 as record demand combines with higher crude prices to raise costs, according to a government forecast. The U.S. Department of Energy projects gasoline will average $2.74 a gallon, topping last summer's average by 32 cents. The increase is anticipated to again boost average fuel spending for the second consecutive year since the plunge in crude oil prices in late 2014. The Energy Department anticipates that U.S. households will spend an additional $190 on gasoline this year, about 9 percent more than last year.