Photographer friend of mine was in Montreal, and parked in a public lot. After he parked, he moved all his camera and video gear into the trunk - about $10K worth. Got back a few hours later, and it was all gone. I sometimes wonder whether the people at the entry gate at these lots aren't checking the car for valuables when you pull in to pay ahead of time... See something good, call a bud, look the other way while the newly-parked car is being ransacked.
Sorry to hear of your story, vdk. That sucks mightily.