In case you haven’t heard, you can now view six SmartThings devices or scenes in Android Auto (sorry iPhone users). I tried it out today and it works pretty well. When first opening, it takes a few seconds to update the status of the 6 tiles, but then it works pretty smooth. It only works with click-to-execute items including scenes. I tried to see if I could control my thermostat, but it did not work. I added tiles for locks, the garage door, and two lighting scenes.
The wording of the announcement makes it seem that you need a Samsung phone, but it works on my OnePlus 7T.