average cost of gasoline in US
A 2015 national average gasoline price of two to 2.5 U.S. dollars does not seem too unrealistic, given the fact that there are about 42 gallons in one barrel of oil, and a 42-dollar decline per barrel of crude oil will result in a one-dollar drop per gallon of gasoline.n 1995, one gallon of regular gasoline cost 1.11 U.S. dollars. In 2014, one gallon of regular gasoline cost 3.36 U.S. dollars. Customers in Norway, Turkey and Hong Kong are charged the highest gas prices around the world.