That would have been in the early 1970s. I lived in Idaho Falls, ID between June 1973 and June 1975. I didn't drive, but I kind o' remember gas was around 37 cents per gallon. This was after the OPEC Oil Crisis, so 37 cents was the "exploding" price. Before 1973, the last I remember seeing gasoline was something like 26 cents per gallon in June 1969. I remember the price being $1.17⁹ in May of 1980. It's more than quadruple the 1980 price in my small Nevada town in these present days.. . . gas was like 40 cents a gallon back then.