I used to work for these guys. (Score 2, Interesting)

I believe what was seen is a van for http://www.facet-tech.com/ , their url should have been on the van also. I used to drive a van for them, they have a system of cameras and gps to help with city maps and signage. They recently did get a contract to do the imagery for the live and local thing that has been linked. They do collect wifi but it's just a raw count of ap's , they don't run kismet. As far as the speculation they're checking for pirated copies of Windows I don't believe it. But since it's already been said "EVERYBODY PANIC". Or just install Debian.