I haven't verified this information yet, but I have no doubt it's accurate. And I found it quite informative since it was something I had never heard of before. Perhaps you haven't either.
If you drive more than two or three cars, there's a good possibility that you're going to pull into the gas station with the pumps on the wrong side of the car someday, simply because you don't remember which side of the car the gas tank filler tube is on. You don't have to worry about ever doing that again because there's an easy way to determine this ahead of time.
If you look at your instrument panel, you'll see a little gas pump next to your gas gauge. The side of the pump that the handle is on indicates which side of the car you fill the tank from. Take a look at the photo. If the pump handle is on the left, your tank is filled from the left. If it's on the right, it's the opposite side. Another possible option is a gas tank icon with an arrow. That's what my Lexus has. Now how handy is that to know?