I have no intelligence to offer (so you can stop reading, unless you're in the mood for a neat story).
About 40 years ago, my family and I moved to a house in Wentzville Missouri near highway 70 (Major thoroughfare across the country). One night, not long after we moved in, we heard voices throughout the entire house. It raised the hair on the backs of our collective necks. All wide eyed and in pure shock, almost like God himself was talking, none of us had a clue as to what we just heard. The "voice" happened may times over random days and at weird times for many years. One day, My Father figured out that it was truckers with "hotrod" CB radios traveling down highway 70 that were being picked up by the whole house intercom system. Funny thing was, the "system" didn't have a head unit (was removed before we moved in), but every room in the house had an in-wall speaker. Somehow the the signal was "just right" the house picked it up and broadcast it in every room. It was pretty creepy, especially when you were a small child.
