I haven't tested it but it apparently works http://www.thekirankumar.com/blog/2017/12/29/play-youtube-video-android-auto-app/
https://www.audiworld.com/forums/a4...2/youtube-android-auto-now-available-2940039/
https://www.audiworld.com/forums/a4...2/youtube-android-auto-now-available-2940039/