I usually just prop my cellphone in front of the car's screen if I don't want to bother setting the car's NAV and I only play two radio stations when I drive so it doesn't bother me, but I understand what you're saying (although my experience with Android auto wasn't great).
Honestly I just wished the NAV could sync with my phone via Bluetooth even if it used Volvo's map, that's all I would need for it to be perfect.