If there's a world in which emergency information is shared with the populous using AM radio, then it should be considered a bare minimum because human beings, buying the cars and selling the cars, require access to this information.
Its literally information that can lead to connection + survival as indicated by the comments below and so I'm gonna say MVP worthy until the body we say governs all of us provides a reliable alternative.
There is a reliable alternative, it's already where such items are broadcast, and more people use it than AM by orders of magnitude. Next you'll tell me we need HAM radio and Morse code.
Its literally information that can lead to connection + survival as indicated by the comments below and so I'm gonna say MVP worthy until the body we say governs all of us provides a reliable alternative.