Road trip ?
2 Answers
It's self-service, you can fuel at will (suitable for filling up) by credit card or savings card on the spot. If the card is not easily recognized (which often happens), you can only go to the counter (convenience store at the gas station) to pay first and then refuel. At this time, pay attention to how much fuel your tank can still hold.
Gas stations are self-service, otherwise you can ask them for help.