I'm always surprised when I travel in large metropolitan airports and don't have a Tom Bihn sighting. The only one I've had was on BART (a medium-rail transit system in the SF Bay Area): I'd been pondering adding a Cafe Bag to my collection and spotted a young man in the Berkeley BART station with one. He as pretty confused when I asked him about it, and what size it was, though, so I'm guessing it was a gift.

