Happy Vertical People Transporters is the brand name for the lifts in the Hitchhiker's Guide offices. As designed by the Sirius Cybernetics Corporation, they are meant to be sentient (enough to argue with) and have "defocused temporal perception". The latter concept is intended to enable the lifts to see far enough into the future to arrive at a floor before a potential passenger realises they wanted a lift, thus saving them from having to wait around and make friends like they would have to do normally.
Behind the scenesEdit
According to the Radio Scripts, the concept of sentient elevators came from Adams' time working the night shift at a Hilton; apparently, the lifts were automatic and stopped at every floor, so Adams would be sitting in front of the entrance to the lifts at 3 a.m. in the morning when one would come shooting down, open its doors for some 40 seconds, and then continue to the next floor down.
The Happy Vertical People Transporters appeared in: