Not compatible with Android Auto. I was using hangouts for long time until recent switch over to google chat. I think features are good on chat but personally I have one major issue to continue to use it. Google chat is not compatible with Android Auto. I drive a lot on the road and using Hangouts to communicate with friends and families. After switch to google chat, I lost all my communication when I am on the road. Android Auto no longer able to recognize there is message (speak to me and I can reply with voice command). As long as Chat not working on Android Auto. I will never switch to Google Chat and might use other App instead for future.