I have a CD player in my relatively new luxury sports sedan. It plays five—or maybe six—CDs so I can be surrounded by music I choose and like all through even a reasonably long journey.

Or maybe it’s a DVD player. I don’t know, I’ve never used it. If I want to listen to music, I have a satellite subscription. Or I use my phone, wirelessly conveying to my superb stereo anything from the most obscure track in my collection to the latest podcast to which I subscribe.