Ordinarily during 1954-55 regular gas was around $0.19 9/10 to $0.21 9/10 if my memory serves me correctly. The $0.13 price quoted was during a “gas war.” I worked in a restaurant next door to a standard station and made $1.00/hour as a bus boy.
I think the Federal inflation calculator is low, and that the true inflation rate would make gas over $2 a gallon. With an average of 53¢ per gallon fuel tax, that means gas is up, but that if we could drill here and break the Arab oil cartel (fat chance, with the oil sheiks paying off Greenpeace and a ton of politicians to block drilling everywhere except the middle east) prices would go back to pretty much the inflation rate of around $2.50, including taxes.