Very cool. I've only just skimmed the article (and quickly), but I was wondering if instead of generating pictures one could apply this to generating a CA (or parameters for a CA) that does certain types of computations? This would allow us to evolve or find CAs that could perform certain types of multi-stage computations in a highly parallel fashion and could be readily implemented in FPGAs (for example).

Oh, sounds like I just found a fun project to work on.