A dash-mounted hardware player that brings your Spotify tunes to your car speakers–sounds like a no-brainer, right? Or at least it did in early 2022, when Spotify put its Car Thing device into wide release. But Spotify hit the brakes on its Car Thing experiment barely four months later, yanking the $90 device from store shelves. Now, the streamer says Car Thing hardware will stop working entirely by the end of this year. (Spotify is said to be offering refunds after enraged customers threatened to sue.) If you’re appalled by Spotify’s crazy Car Thing debacle, well, smart home users know the fe…