Play Music From Any App On Android Auto With AnyAutoAudio
The Android Auto program is constantly growing, with more and more cars taking advantage of it. Due to its limitations, though, Auto is compatible with only a handful of apps — leaving many awesome music apps out.
Some developers were not happy with it and worked on a solution. One of them, XDA Forum Member jvvpc ,wrote an app that allows streaming any music to Auto using the notification listener permission. Moreover, Android Auto allows you to control it just like any normal Auto app. You can simply play whatever music you want with this app!
Visit AnyAutoAudio’s thread