Will there ever be such a thing? I know that you can use your phone on a mount, but having your phone integrated into your dash screen, steering wheel buttons, etc. Is a big convenience and I also think safer.

Would a drop in replacement be possible? Or would a whole new app need to be developed and integrated into every car manufacturer?

This is one google app that I still heavily rely on, unfortunately. I'm sure they are harvesting everything about me as I drive.