from the Daily Mail article,
"He assumed that she had walked the short remaining distance to the terminal. The couple then drove toward the airport to check, he said, but they didn’t see her along the way. "
"Wood claims the pair then waited outside the small terminal for some time but did not go inside."
I would assume there were surveillance cameras, yet no sight of this pair, nor of their car evidently.
The only surveillance LE has of the car is on a road in the area the name of which I forgot.
I guess Wood had a lot of time to concoct this detailed story while not sleeping in his car.