I realise there is an audio section in this forum but this question isn't exclusively about audio. There is a choice between using the built-in maps, phone app, media etc., or replacing the whole lot with Android Auto. Which wins? It seems a waste of all that tech to just use a simplified interface to a phone to deliver maps, music and communications, but android auto is a really good and simple interface and does just what you want. I am reading that the BBC iPlayer radio app now integrates with android auto and so you can listen to a vast choice of historic broadcasts rather than what happens to be on the air. And Google Maps, of course, gives real-time traffic density based rerouting.