Which side do I fill my gas on?

Being a car dealer and driving so many different cars I often pull up to a pump only to find I am on the wrong side to put gas in.  I have to say I have been in the Car Business for over 40 years and I recently learned how to locate my filler cap without pulling up to the pump only to find I am parked on the opposite side. Look at your gas tank gauge and notice the arrow. Which ever side the arrow is point is the side to fill the tank. The arrow in this picture shows the tank is on the right side of the car. When the tank is on the left side of the car the arrow will point to the left.