What is your source for that information? Post the link to the web page please.
I thought the vehicle was from a rental company. Now you say it was borrowed, as if from a person they know. So, who's the guy who works at the airport? And why was this individual taking passenger lists home after work?
http://righttruth.typepad.com/right_truth/2006/08/pakistani_men_a.html
here is the link about the airport papers