Comment Re:You need this for an emergency (Score 1) 136
> The electronics that drive such powerful motors produce HUGE quantities of RFI
The electronics that drive such powerful motors are inside thick, cast aluminum housings, as are the motors themselves, and those two things are usually bolted directly to each other to form one massive lump. I don't think you appreciate how much RF shielding goes into all that already because, y'know, there are a lot of other electronics in the vehicle that might get fucked up by it. The $5 worth of metal" would be the shielding can around the radio itself, not the HV inverter circuitry that is already encased.
The "Electric vehicle electronics interfere with the AM radio signals" argument is complete horseshit. The AM radio in my 2020 Kona EV often works better than the FM radio for some reason. It's not an especially expensive vehicle so the cost of making it work certainly isn't a reason to not do it.
=Smidge=