TL;DR: Spotify made a sleek new gadget that presents a nice Spotify interface designed for mounting on a dashboard. It connects to your phone and uses its data plan. No maps or navigation. Just Spotify.
My reaction is that this isn't helpful for anyone who has a newer car that likely can connect to a phone via CarPlay, Android Auto, or Mirrorlink. And for those who don't, the device is sorely missing navigation. If my car couldn't connect to my phone, I'd be looking for a $20 plastic thing to mount my phone to my dash so I could get nav + music.