In the mid-seventies expansion of the department caused people's
offices to be located ever further away from the main terminal room
where the Coke machine stood. It got rather annoying to traipse down to the third floor only to find the machine empty - or worse, to shell
out hard-earned cash to receive a recently loaded, still-warm Coke.
One day a couple of people got together to devise a solution...
- Tom Lane; The "Only" Coke
Machine on the Internet.