As we learned the hard way, the problems that we come across when using Android Auto don’t always come down to the app itself but to the related services that it needs to run properly. In other words, if something’s wrong with voice commands on Android Auto, there’s a chance the Google app is the one to blame, as it’s powering Google Assistant everywhere in Google’s ecosystem.
Link: Fixing Android Auto Sometimes Comes Down to Weird Workarounds Like This One
via http://www.autoevolution.com