Seems like mostly what they've produced is TED talks.

That's a bit snarky. I was pretty pumped with the project at first, but it really seemed poorly run, and also seemed to ignore a lot of prior art when designing hardware. Their compressed block machine does seem fully thought out and functional at least, but their first tractor snapped in half on its maiden voyage, and the replacement looks like a post-apocalyptic bobcat. There's a reason most farmers aren't using bobcats in the field.

Anyways, neat idea, and I hope it inspired others to focus on open source hardware for agriculture and small-scale civilization.

Marcin was not able to lead the project coherently. Groups of contributors joined for fairly short periods of time and then left, often disappointed and even angry. No idea, if Catarina has been able to influence him for the better. Let's hope so.

I have no idea -- I just dug it out of my bookmarks.

When I looked at the progress of the machines I had a sneaky feeling it might have slowed down - I was interested in the "aluminum extractor from clay" a few years back :)