Foldable mirrors should be added to the game since they added better mirrors, they should close when car is put into park when the car is automatic, and when the car is turned off completely and stopped completely. It should look something like this: and should only be available on modern vehicles like the Cherrier FCV, ETK 800-Series, etc.
What are you talking about bro? There are already in-game. Although they are not automatic, you can fold/unfold them with the node grabber or by pushing them with walking mode. Okay some don't but the majority of modern cars do.
There's been a mod or two with those I'm pretty sure. It makes sense on vanilla vehicles but there's a whole host of things that make sense on modern vanilla vehicles that don't exist. Back up cameras, fuel doors, lane keeping assist, self driving, proximity alarms, airbags, etc... I'm not saying this is a bad suggestion it's a good one but at the same time there's an entire list of things that should be on modern cars that aren't in this game so I wouldn't hold my breath. You would enjoy the CCF remaster. It is very detailed and has tons of features like what I mentioned.