Ok, three things (click here).
1) If they can name a product "Car Thing", you can be creative,
2) It sounds like Spotify disabled interfaces on some car stereos (i.e. Spotify Connect), making this product more amenable ... in essence, they killed a free function and are charging for what used to be free.
3) If they can create a product that acts as an interface between your car and phone when your phone already interfaces with your car and charge $89 for it, you can be creative as well.