[antiRepublicrat]

How do they produce a new show, in such a short time?

The animation is pretty much all automated and computer-driven, so all they have to do is come up with a storyline, move characters around, and do the dialog. IIRC, Trey lately does most of the work, and comes in only a few days before deadline to do it. And by submitting it just before deadline the censors don't have time to tell him to cut anything out.

[Redcloak]

Actually, the opposite is true. They can turn things out so quickly because they're a low-tech operation. The animation is all stop-action done with paper cut-outs.