Have you looked at this?

Android Auto: [Please Register or Login to download file]

Interesting idea...not sure I'd be comfortable letting google anywhere near my car though.

I hear you. But just know that I have Android Auto in my Honda Civic Sport and it works just fine. All I say is "navigate to ....." and it automatically navigates to the destination. I have a choice of either Google Maps or Waze. Maps are automatically updated.

First, you must download the Android Auto app to your phone. When I start the car and the display shows up showing the different sources, I then plug in my phone and the Android Auto choice shows up. I don't even use Igo any more.