Radio equipped with a sensor that would pick up a signal sent out from an emergency vehicle that is running lights and siren. It could mute radio and announce EV near. A button on radio so you can acknowledge it and radio return to other media you had on. Low signal output so it only transmits a short distance. Much like the ones they have for traffic signals now. Might save a few lives. And NO--I didn't stay at a Holiday Express last night---just(don't laugh) thinking!