Awesome!!! Can't wait to hear how you like this. The Viva is great! I reviewed it almost a year ago on YouTube if you want to watch: https://www.youtube.com/watch?v=na2nCj19zek
I have Alexa all over my house, so it was pretty natural moving her to the car. When driving I listen to music or the news. It's amazing to just turn the car on, hear it connect, and just say, "Alexa, play ....". I've been listening to SiriusXM a lot lately. I also use it to control the lights in the house if I'm coming home late or left a light on, listen to my flash briefing, and add stuff to my shopping list that I forgot to add at home. I use it with the kids to play games, get answers to thing I can't google while driving, or just finally play the song they've been begging me to play.
I recently got some Google Home devices and really like the smart Google assistant! I think this is going to be a great addition to the car!
Voice calls happen hands-free. Directions do require you to interact with your phone, but it gets everything ready to go on the back end, so you just have to unlock the phone and hit go in your desired maps app. As far as I know, the Viva can't make texts, but you can send messages through Alexa. I imagine it might be the same with Google?
If you want to know anything else specifically about the Viva, let me know! I wouldn't be surprised if this does mostly the same thing as the Viva.