And if it was me, I would add one.... actually it was me, my old Aussie Charger never had a passenger side mirror either and I had added one to it as well.
You paid attention Forrest!!! Thanks for your "add a mirror post"!
I tend to notice odd ball things, even when not circled in red.
Oh, and a back up camera is a nice idea, but the side mirror will let you see the quarter panel area which is nice when backing along side things too.