Car broken into..

Not sure why, but someone broke into my car last week. They didn't take anything, mainly because I don't leave stuff in my car. When I was cleaning up I found a CD I didn't even know I had, so they didn't look too hard either.

The weird thing was that whoever broke into the car left a ton of glass on my hood and roof which seems a bit odd. It cost me $180 to fix the broken window, but I did clean my car as a result, so something came out of it.