Rear Mirror for vehicles

I’m sure this has been suggested before, but I searched and could not find a topic specifically about this. When driving vehicles it is really hard to do anything in reverse and I don’t think a 3rd person view is needed as that would break the game for corner peaking.

But what if it was possible just to have a rear view mirror texture and model added to the vehicles, I apologize in advance if the game engine doesn’t allow for it. I’m just a curious player with some game design background thinking out loud!

Would love to hear if this is something that is actually possible or not because I believe I remember there being mirror textures in gmod.