In foreign countries, you have to fill fuel as well yourself
In my area, for some petrol pumps, if anybody wants to pay by Credit/Debit card, pump attendant goes somewhere, get
credit card machine, enters amount, then key entered by customer, then wait for transaction complete. Till that time, queue of vehicles starts growing.
I hope all Petrol pumps have separate queues for Cash payments, card payments and now digital wallet payments.