A friend of mine has just returned from Manchester where he left his car (not a Landy) parked up while he watched a footy game. When he got back someone had jacked his car up and used a grinder to cut his cat out of the exhaust. Because they hacked it out he must replace the whole exhaust - £1500.00! Fortunately the insurance will pay out, but he's lost his no claims discount. After he told me this I then read in our local paper that the same thing has happened a few times in Cumbria as well. I'm not sure how to guard against this but I'm even more careful where I park now!