Can anyone beat this?  Brand new van, parked outside my home at 1630, last seen by me at 2200, gone next morning by 0830.
Fortunately, it was located about 200 metres from home, with draw bar/tow hitch lock still in place.  Attempted theft or prank - who knows?
Naturally, I wanted better security so I tried a local supplier for a good quality wheel clamp.  They had one around $90.  "Don't waste your money," was the reply, and this was from the bloke who sells them.  "Go to a motor cycle shop and buy a good quality motor cycle lock and chain which is about 1m long and put it through the wheel spokes (tandem axle van) and around the suspension."
I took his advice and $200 later I chained my van.  It fitted perfectly  This type of lock is the same as used by the environmentalists to chain themselves to bulldozers in the forests during logging demonstrations.  Bolt cutters and hydraulic shears don't make a dent.  No, I wasn't a demonstrator but I was in an occupation whose job it was to cut these people free.  It wasn't easy.  Special shears had to be imported.
By the way, I had fully insured the van before I went to bed.  Don't ever think it can't happen to you.