Yes, you are seriously off message! However, there are a couple of interesting points that might be discussed.

First, one feature of public transportation is that you are forced to confront the actual public. It's easy to sit around in our private studies and write great theoretical treatises about how the perfect world of cooperating, like-minded, sensible adults would work, but at some point one must confront the fact of the obnoxious mob.

Also one might discuss the effect of the long-term stability of the London bus route numbering system and its effect on the global diaspora of Londonophiles. Some routes have been amazingly consistent for almost a century. Consider Route 7, which has been in use since 1908. http://en.wikipedia.org/wiki/London_Buses_route_7

People who visited London even in the 1930s or 1950s or 1970s might be familiar with the route, and if something happens, like a terrorist bombing (e.g., the events of July 2005 on a number 30 bus, with route established in 1911 but significantly modified since), there is an instant global community of people who identify with the event.

In years to come you will look back fondly on your familiar London bus routes. However, they won't be memories of the now-retired Routemaster bus you have illustrated, but something more along the lines of this: