The ConferenceBike, by Eric Staller, is a circular tricycle built for seven people sitting in a circle facing each other. It seems that after several minutes, complete strangers start to talk to each other.
A ConferenceBike is currently on view at the New York Hall of Science till September 26, 2004.
The hand-made Aeolian Ride costumes are similar to each other but are distinctly different (the website even provides patterns for a DIY and customizable outfit).
As the rider’s body is re-sculpted through inflated shapes, his/her physical and mental self-awareness become more acute. By joining a group of costumed cyclists a person also becomes aware of the connection of the group as a whole.
More on people connected by inflatable suits with Nexus Architecture/Collective Wear by Lucy Orta.
UPDATE: Max just sent me a link to a site in czek featuring a bike apparently made by a total geek.