Buses on the opposite track zoom by.

The control wheels attached to the main wheels.

View from a passenger's seat.

Ok took awhile but I've been spending the last few nights doing some photo related stuff. BAD! Anyways, as mentioned here's a few pictures of Adelaid's O-bahn system. It's a very new experience to get off a normal road, and hop onto a high speed track. The bus runs automatically thanks to the small guide wheels attached to the main wheel at a pretty fast clip. For more information, may I guide you to its wiki page.