We're still waiting for Google to allow 3rd party mapping apps on Android Auto. Waze is owned by Google and was used as a test of a non-Google Maps app on Android Auto. Hopefully support will come out for the rest of us. Same goes for CarPlay.


Here's a link to their training guide if you'd like to keep up with what can be done on Android Auto:
 https://developer.android.com/training/auto/index.html