There are radios in the cars if you go in first person mode. But i think it will be better if Music Or News and Commercials were available Via Option It can make it more realistic
If they add it, I think they should have it as a "ui app". That way you can switch between stations. The app could have the stations and on/off. One station should have music and have news breaks that would be about Beamng's update logs and different things they are doing or planning.