I have never lost the whole rack itself, however while eating at a restaurant in Moab Utah, I had someone with a sawzall with metal blade, cut the poles next to the mounts of my rack and take three very high-end bikes still attached to the bike mounts.
It took them less than 10 minutes, and no one saw a thing.
The bikes were covered by our sponsor, but it just goes to show that if someone wants something bad enough....
