The bus is tweeting

While riding the bus into work yesterday, I tweeted a comment about how I just didn't feel that the bus was making the most environmentally conscious route while navigating the loop of the Medical College. To my surprise, a few hours later the bus tweeted me back, asking me how my ride was and what my concern was about the route (of course, it wasn't the bus tweeting, but I can't shake the vision of a Milwaukee bus with an iPhone or BlackBerry attached to it's windshield, tweeting). I found this convergence of Twitter and transportation pretty interesting, especially considering that the transportation side of it was reaching out to me, the passenger, through unsolicited feedback. I'm wondering what other implications this could have for public transportation, now that the bus seems to have a route map (Twitter) of people? I'm seeing some sort of dynamic, flexible, indeterminate bus routes that are completely driven by online networking, although that's probably still a ways off from the traditional 10 Route down Wisconsin Avenue.