Good points, well taken. When option for AM radio goes the way of the dinosaurs, will an AM compatible vehicle antenna be an option?
My understanding is that the AM antenna has always been a small device within the radio, itself.
When AM reception stops being a concern for the car, the car will probably become a noisy emitter at those frequencies, which might make reception impossible.
I believe that the government has sunk a lot of money into emergency AM broadcasting. Oh, well. At least it wasn’t their money.