Fuel Door Riddles

Left, right, who knows what's best? Back in the day, the the gascap was placed behind the rear licence plate on some cars, but, if memory serves, sometimes cars went up in flames after rear end collisions due to this placement. I suppose this problem will become moot when all cars are electric. Yet what is the best place to put the charging plug socket on these electric cars? Better yet, charging at a distance is on the way, so problem will be solved, I guess.