I am so sorry to hear about the &^%&^%&% who defiled your car, your property and indeed, your right to have ones possessions remain yours and yours alone.
I am sure a number of us on here, bicycle chains in hand, would be very persuasive if we could find the transgressors - heightened only if we stuck 'plans' of passive 4ws SVX's in their hands before we set Eddycat on them!!
Again, my condolences.
James