Add the ability to create and Instant Mix or Radio mix from the currently playing song via the Android Auto interface. This could be an additional option in the 3-dot menu.
I usually start the Song Mix when using Android Auto. If a song plays, and I decide I would like to start an Instant Mix or Radio Mix based off that song, I don’t know of a way to do that via the Android Auto interface. I currently have to use my phone, which is less than optimal when driving.
Instant/Radio Mixes are a great way to generate a new queue of similar songs based off the current song. Currently I have to use my phone to do this, which is unsafe when driving.
Implementing this in the Android Auto interface in an easily accessible way (no more than 2 or 3 taps) would greatly increase safety and make it easier to change the musical mood, especially on longer drives.
Spotify has a radio icon on the bottom left of the currently playing song that will start a new station based on that song.
I think I have covered everything.