This is what a 2008 Volkswagen does if the battery is dead. This is not while attempting to start the car or operate anything; this just the car sitting there parked. There is no way to open the hatch because it doesn't have a manual latch handle. There is no operating the locks. Whether the key is in the ignition or out has no effect on this weirdness.
Note: Seeing the dust in this video really makes it look awful. If it looked like that in person I'd have cleaned it. I think I'll clean it now, that's icky.
Edit: You'll want to have your volume up to hear the car clicking and dinging randomly (and some birds singing).
http://www.youtube.com/watch?v=yO13PSzxyOc
[yt]yO13PSzxyOc[/yt]