Spotify’s Car Thing Is Baffling, but Works as Advertised

I love my old car. It’s officially a teenager—13, to be exact—but its in-dash entertainment setup makes it seem a whole lot older. For the longest time, I’ve been using the Android Auto app on my smartphone as my car’s “infotainment” system. Years ago, I yanked out the 30-pin proprietary iPod hookup in my glovebox to…