It's not clear from this if the parking people are resorting to wheel clamps, but if so you can always do what I did, i.e. nip down to your local hardware store, purchase a sodding great pair of bolt-cutters, ...... nuff said ! <img src="wink.gif" border="0">
The best one I ever saw was a builders van with a clamp on it. The builder came back, looked quizzically at the clamp, opened the rear door or van, pulled out the biggest petrol powered angle-grinder I'd ever seen, and after a deft bit of handiwork no more clamp. He then drove off, but not before he'd finished grinding 'F*** you !' right through the metal of the clamp itself - pure art it was, pure art - yep, nice one !