There were several articles about a new “wardriving” technique that was talked about at Defcon (this topic and a bit more Defcon coverage here). In fact, this takes the driving out of the mix and involves launching a rocket. Essentially rockets were equiped with access points and launched to get a 6000+ foot view (for the largest) of the wireless landscape. Now, they didn’t turn up a LOT, but they did see an impressive range of area *(50 square miles for the largest). One of the smaller rockets made it to 2000 feet. It was a rural area where this was done, so they didn’t pick up much. Although it had a range of 4 miles, the big rocket could only find 2 networks.