Thunder storms

The long story is that with EV the motor speed controllers make nasty electromagnetic interference, way worse than the popping you hear in an AM radio from running non resistor spark plug wires, and rather than go to the expense of trying to kill the EMI they'll just remove the AM band from your radio so you can't hear the nasty noise that would completely blank out the AM station you may want to hear. Which is a good fix to an extent considering that AM is almost dead and few would miss it (this will go ahead and kill AM broadcast) but it will still screw HF mobile operations. Of course they also forget that most emergency highway broadcasting is done on AM bands. But hey, too big to fail GM wants it, they gonna get it.