Which side is the petrol cap?

Nothing to do with Historic Rallying but I thought I would share this gem with you.If like me you have a pet hate of pulling up to the petrol pump in a hire car and finding the filler is on the other side, here is a tip you are gonna love. Look at the petrol gauge on the dashboard before you get to the petrol station, you will notice a logo of a petrol pump. Now look at the nozzle on the logo, is it on the right or left? If the nozzle is on the left your filler cap is on the left and vice-versa, simple but effective !