Above: radio has always been the #1 choice in a car. Until now. This data, from Edison Research’s Share of Ear study, has shocked me. It shows, very clearly, that for young Americans, they’re choosing to listen to media from their mobile phone instead.

I don’t know why it’s shocked me. I myself rarely listen to radio in the car. My iPhone connects via wifi to the car dashboard, so I have my collection of podcasts to listen to, as well as music on Spotify. In many cases, why listen to the radio, when I have everything I need on my phone?

Now, sometimes, sure, I’m listening to live radio on my phone, via the car’s dashboard. I’ve discovered that BBC Radio 1’s early morning show is quite a good listen for school pick-up time, for example. But that’s the exception, rather than the norm.

This is quite the watershed moment. I ...