Gas stop: usually the ride needs at least one top up, typically at a suburban station where the gallon price is a good quarter less than the city one. Currently prices are 25% lower that earlier in the year. Canada’s oil sands are responsible for this; though OPEC keeps a rein on the global picture.
Its only been the last forty years or so when the barrel as a commodity has dominated world economies. Before then it was cheaper than water and to fill the boat sized automobiles typical of the ‘States was an inexpensive proposition.