You wouldn't believe all the idiots I've seen this summer with a really expensive bike just laying out in the open with no lock. I saw a top-of the line Bianchi road bike with Campy Record and the works just leaning against the wall of a small town cafe while the owner was eating lunch, not by a window or anything, just waiting to be thrown in the back of a pickup and taken away. Also was riding down the street in a bad part of town and seen a Jeep on the side of the road with two $5000+ Downhill bikes just leaning against it, no owners to be seen for miles, almost too much of a temptation.