Cars in the USA should have gas tanks on a uniform side. None of this some-on-the-left, some-on-the-right.
It creates too many problems at gas stations when the current pumps are full so you have to pull in behind someone and wait. If my tank is on the left I pull around one way, but people with tanks on the right sometimes pull up the opposite direction, and if their tank is opposite the current pump user, they just allow enough space for that person to drive off. But they'll still try to pull in from the other direction same time as me.
It's anybody's guess as to whether or not they see me (or someone else) back there waiting, but it leads to some awkwardness.
Or in one case, a guy was parked WAY off and I had no idea he was waiting on the pump of the car in front of me. Indeed, he was there first, but I would've never guessed he was "in line" for that pump. When the current user left, I started pulling in, and that car gunned it and met me bumper to bumper where neither of us were at the pump, cursing his head off at me.
Stuff like that wouldn't happen if gas tanks were all on the same side.