Hello,
I have a pretty good suggestion that I would love to see happen. As Plex has LiveTV support, you can use it to watch LiveTV on your Plex Media viewers. Plex has now been expanded to the car with PlexAmp where there is now a CarPlay app which you can use in your car to play media using the touch screen on your car. I would like to suggest adding the ability to play other media besides music with PlexAmp, but audio only like you would with Music. For example, the SirusXM app, you have the ability to play Audio only of popular news stations on your phone or via CarPlay. There are other stations on there as well that you can also play audio only from.
There are also, depending on your provider, music stations that are available on LiveTV, it would be great to be able to play those as well through PlexAmp. While PlexAmp is marketed as a music media player, there is no reason why it couldn’t also play audio as well, giving you the ability to play these directly on your CarPlay radio. As there will be no video, that gets rid of the standard legality concerns of allowing someone to watch video while they are driving.