The Android Auto app links new cars that support Android Auto to Android 5.0+ phones (Lollipop or Marshmallow). Have a compatible car and phone? Just plug your phone into your car’s USB port to get started! Android Auto brings the most useful apps from your phone to your car’s screen, optimized for glanceability and readability while driving. Android Auto requires an active data connection to fully utilize these apps and may require updates to some of your existing apps, such as Google Maps, Google Play Music, or the Google Search app.
To see if your car supports Android Auto, check your Owner’s Manual or contact your car’s manufacturer. Learn more about Android Auto at http://www.android.com/auto/
For support and known issues: https://support.google.com/androidauto/?hl=en