If you’ve ever been anywhere where there was NO electrical noise and NO running cars you wouldn’t believe how far that ‘idling car’ noise will travel...
That would be a legitimate concern if one lived in the city/urban environment when the shtf.
Out here, our "Gulch" is seventeen miles from the nearest tribal settlement, fifty from a small town, and our closest neighbor lives over a mile away... We are more worried about the damned black bears crashing our party than the two legged beasts!
True. Back on the old family farm, we could hear when someone was coming down the road to the house hundreds of acres away.