When not standing outside the airfield perimeter fence on his little step ladder with the world's largest telephoto lens or standing on the end of the platform at Westbury entering the number of cement wagons he's just counted passing, then he's the sad anorak who, whilst driving from one to t'other is using his laptop to log wi-fi hotspots.
Dictionary definition:
WarDriver: One who locates and logs wireless access points while in motion ;[benign]. WarDriving was invented by Peter Shipley and now commonly practiced by hobbyists, hackers, security analysts and retired Crabs worldwide.
Sad but true!!!