> - "It's on your phone"
Straight use your phone.
There is no need for the car to adapt, no updates, no back deal by the car manufacturer, nothing is tied to the car except Bluetooth.
Current screens are IMHO big enough, moving to a tablet or foldables is also an option
Mounting/unmounting is a solved problem since magsafe (or Peak Design like stronger updates), which also handles charging.
Voice commands will be enough for most operations and you're guaranteed to have physical buttons for volume up/down and screen off.
You're also 100% efficient with the interface.