OK, ID marking is nothing new as they already have CRiS etched windows and also the 'ThiefBeater' marking system. What about this idea though? Marking the roof of the van with large black letters, either the CRiS or Thiefbeater identifier, so a van could be easily spotted from the air while they are tracking your precious stolen Fleetwood.
This would be very cheap and easy to implement. Where's the patent office?