As some other people said (while, unfortunately, missed the whole point of the exercise said), this is completely impractical and the altogether the wrong technology to actually _do_ this sort of thing in production. It's really just meant to push boundaries and be a demo of what can be done in CSS (at least I hope that's the intent).
If you're going to tackle the "autogenerate" problem, it's probably a lot more interesting to do so in SVG or something of that ilk.
