Someone round our neck of the woods has a rig that sends our brand new Citroen bonkers. The other day, we found the windows had wound down to the bottom and the doors were unlocked.
Now, the windows shouldn't work at all without the ignition on and there's no combination of key-presses on the fob that will cause it. It's a mystery (RF-related mind you).

Moon-bounce is a mildly amusing exercise for us amateur radio geeks. The conversation tends to be a bit one-sided though.