This is a cool story, about HighWLAN: A Driving Wireless Network. When Casey West and friends decided to drive from Pittsburgh to St. Louis they first thought about using cell-phones to communicate, but ended up (as true geeks) with the first known mobile Wi-Fi setup for communication. They threw in a cell-phone with an internet hookup, and voilà – they had a internet connected Wi-Fi network.
Very cool and geeky!