My local petrol station has just had totally self service pumps installed. You can use a card to pay for petrol and never have to set foot in the shop. The staff reckon it'll be a while before people catch on. It's a provide card before fuel is dispensed type which should cut down on people driving away without paying. I know someone at university who did that by mistake. He went back and paid as soon as he realised about 15 mins later but by then the police were looking for him. He'd been in to the shop and bought some chocolate just forgot to pay for the petrol. The guy behind the counter said he was as much to blame for not asking about the petrol.