Do manufacturers try to even out the number of cars with fill caps on either side? Imagine the chaos at gas stations if everyone had the cap on the same side of the car.
I'm pretty sure it would be a lot more orderly, actually. Everyone on the right side would move one way, everyone on the left side would move the other way, it would be perfect.
On all the cars that I have had, the fuel cap is on the drivers side of the country in which the car is designed. So depending on which side of the road they drive on in that country things move. Just a personal data point..
