The Spotify Car Thing cost $100, but I can't use it anymore.
EDIT: The only reason why I still had it at this point was because I could use it with other apps. However, now that my Spotify Subscription is cancelled, it doesn't work with anything. It's mildly infuriating because today, I can't still use it with other apps like I was able to yesterday.
Please don't make the same mistake I made. No one should buy this.
This is not true but basically true. Those who subscribed to the early access mailing list were able to purchase it for $25 instead of the $50 MSRP. I bought one when they first came out and I absolutely love it. I can definitely see OP's frustration from it not working unless you have premium, that's pretty bullshit.