I'm a techie at heart.
But the only thing my car needs to do is act as a Bluetooth speaker/mic for my phone, and have a wireless charging mount.
When I need to use the phone for GPS/etc it goes on the mount.
When I turn on my car it connects to my phone over Bluetooth and starts playing music. Even if it's in my pocket (shorter trips)
It works, it's fast, it's simple.