I love DAB but I also get signal problems a lot of the time...Wow I thought it was the standard all over the globe now! Is it just the BBC pushing it here that's got it through then. Or at least mostly though. As Tel said, a lot of stations wont stay tuned in as you drive around in a vehicle.
I thought it was like the phone 4G then onto 5G situation, where it's a bit of a given it'll move onto the next one. Clearly not then!
When I was in America my rental car had satellite radio which I thought was amazing always wondered why it wasn't a thing in the UK. I don't think I ever lost signal and I covered thousands of miles.