International standard ISO 7736. Cars have had "modular infotainment systems" for as long as I can remember. My old Z car had an am radio, that later upgraded to FM cassette, then added a 6-disc CD changer, then when the changer finally died, yanked it all, installed a flip out 7" LCD w/bluetooth, NAVi, Pandora, etc. Every car I ever owned eventually got some kind of upgrade to the "infotainment system." What I see happening is bluetooth taking the show, and your phone does everything else, the car would only have an amp, speakers, touchscreen, and bluetooth, that is all, it doesn't NEED a hd, no 4G, no disks, no computer, nothing. Want an upgrade? Get a new phone, or may only need an app for that.