https://www.theverge.com/2018/8/28/17790504/apple-music-android-auto-support

Apple Music is testing out an Android Auto integration and it’s available now in beta on version 2.6.0. All you need to do is download the beta version of Apple Music, which you can find over at Android Police, and the latest version of Android Auto, then go into Auto and tap on what music you’d like to listen to.

Apple Music will now show up as the top option, and you can stream radio and specific songs. It’s a good alternative music streaming option, especially when there are certain titles unavailable in Spotify, or in the region you live in.