When I shift my car into reverse, the radio turns off.
It turns on again when I shift out of reverse.
This is such a bizarre phenomenon that I can only presume that I have accidentally activated a "feature" that Ford put in my car for some reason or another. ("Hey! You're backing up! Stop singing along to the radio and pay attention to what's behind you!")
I don't intend to take it to a mechanic. My problem would be greeted with looks of bewilderment (and probably cost a couple hundred buck to fix).