Fun, but even after hundreds of generations the walkers are still pretty bad. How good would they be after thousands or millions of generations? Is it even feasible to create a decent walker using genetic algorithms?
It doesn't really say how it works, but it doesn't seem like a very natural way to do walking. E.g. here is are evolved walkers in a more complicated 3d simulation: http://vimeo.com/79098420 They seem to get very good after just a few generations compared to this.