I’m a developer for Nocturne, a custom firmware for the (soon to be ewaste) Spotify Car Thing that restores stock functionality.
We’ve fixed a bunch of bugs, added new features, and we’re hard at work to release 3.0.0 beta, the fully standalone version (no Raspberry Pi).
Recently, we added the ability to log in directly with your phone, no VNC needed.
This is the first feature preparing for 3.0.0, which will let you use your hacked Car Thing with just Bluetooth tethering on your phone, resulting in similar functionality to the stock Car Thing.
You may also expect some more features in the future:
- No Pi required
- OTA updates
- Better brightness control
- Select Spotify device
- Account switcher based on connected phone
- Voice controls
*Please note that not all of these may make it in 3.0.0, but are on the roadmap*
Follow me and join our Discord for more update threads in the future!
Hayden Seay 
Paul Haddad 
Fedora Project