Obviously the tank in the car must be corresponding.
Imagine how elegant it wouldn't be to fight with your fuel nozzle to get it properly aligned. Ever try to plug in a USB and it takes 3 tries to get it because you try it once, doesn't work, flip and try, nope, flip and try, works now. People will now be doing that with their fuel nozzles.
I think round is the way to go, change it in a different way.
Imagine how elegant it wouldn't be to fight with your fuel nozzle to get it properly aligned. Ever try to plug in a USB and it takes 3 tries to get it because you try it once, doesn't work, flip and try, nope, flip and try, works now. People will now be doing that with their fuel nozzles.
I think round is the way to go, change it in a different way.
Nope, they are anatomically the same. Black is for diesel though. But it is easy mistake for absent-minded person who needs to make a phonecall or needs to pee!
Imagine how elegant it would be to have one nozzle triangular and other cross-section.