Why does the gas filler symbol on the dash not match the actual location?

What is your question?

On the dash is a gas pump symbol with an arrow next to it indicating( I think) the gas filler is on the driver's side of the car. In actuality, the gas filler door is on the passenger side of the car. Am I mis-interpreting the dash symbol or can the direction of the arrow changed to agree with the true position of the gas door? Thanks