BOLO for some stolen night vision...
I parked a Porsche 924S and then a Fiero SE on the streets in the ATL for years. Left absolutely nothing of value in the car, took the faceplate off the stereo, and left the doors unlocked. I can remember at least three times off the top of my head (meaning there were likely more) that I came out to find my car's door ajar and several neighbor's windows broken.
Getting something valuable stolen is bad enough, but I'd feel downright idiotic having to replace a hunnert-'n'-fifty dollar window over a failed attempt to protect seventy three cents in loose change and a Depeche Mode cassette.
