I sincerely hope the Android team is working at improving the mobile app’s notifications as currently they stack up, filling the notification shade and status bar (they should be nested for the app).
And also looking at the new API designed for Android Auto. As it is now, I miss all SmartThings notifications when my phone is connected to AA, resulting in not getting ones designed to inform me about leaving the garage door open when I leave, and motion in home when I am away. Right now this means changing my apps to use SMS instead. While this will work, I am guessing it would be a win for everyone involved to have SmartThings notifications available in Android Auto.