On Demand Books LLC. is planning to become the first company to globally deploy a low cost, totally automatic book machine (The Espresso Book Machine), which can produce 15 - 20 library quality paperback books per hour, in any language, in quantities of one, without any human intervention.
Rather than describe it, just watch the video.
You know what's cool about this? Not printing out your own books, which is, but the potential to browse a library's library and downloading and printing out your very own copy of the book to run around with and read. Or, if a library doesn't have a book you want, rather than have one shipped, they'll just print it out for you in a few minutes and you're on your way. There's something romantic about having your own copy of a book printed to me. I love the idea.