I've been thinking recently about the white truck with OK tags... Couldn't they filter out the Bureau of Motor Vehicles (or whatever it's called in OK) database for that? I would think the basic vehicle information (color, etc.) would be stored in there. Wouldn't that help narrow the search, at least? I know thousands upon thousands of records would probably be returned, but it's better than the probable millions of possibilities at this point. All of this is assuming, of course, that the truck and the (hopefully still current) POI are in any way involved; I realize we can't even know THAT for sure at this point.