ICE engines have been try to pollute AM bands since forever with their ignitions and other high voltage discharge systems -- that's why they're usually fairly s

ICE engines have been try to pollute AM bands since forever with their ignitions and other high voltage discharge systems -- that's why they're usually fairly shielded. HID headlights created huge interference problems on the earliest cars to equip them -- now they're shielded. The early Prius model owners could famously tell when the ICE engine was about to begin operating due to the ICE ignition system beginning charge and causing AM interference, which then became much more pronounced upon activation and ignition discharge. I guess my point is that these were all tremendously noisy sources that got remediated -- I worry for the RF noise floor across the board when companies are no longer incentivized to chase such gremlins.