Stumbled across this one last week when was looking for something else. Dont know what your view is on cars that end up being disposed of as result of repossession etc but it might be worth a look:
There are 2 tools you need in life: WD-40 and Duct Tape. If it moves and it should'nt, use the Duct Tape
If it doesn't move and it should, use the WD-40