When I were a lass, (circa 1980) I lived in a very small flat in a very central part of a city. Watching telly one night, my viewing pleasure was interupted by CB chatter, so I opened my windows wide and peered into the street below.
The ariel [sp?] on the car was obvious.
So I wandered downstairs, and approached the renegade vehicle. (CB was illegal at the time) The chap denied all knowledge, until I repeated their recent conversation word for word. 