In BMWs, the gps antenna is behind the upper lights, the telematics and V2V antenna is in the sharkfin(unplug it from underneath the headliner)
Then on the other hand, who cares about those when your car is already tracking you? /s That kind of helpless reasoning needs to die.
I use Android Auto mostly because I don't trust manufacturers of car components to maintain their software and to put more than bargain bin SoCs in their infotainment consoles. There's no need for your Android phone to have a connection to the outside world if all you're using it for is locally installed apps.