Yeah, that's pretty cool. I also think it would not take as many people to run it as they had there - but they probably like to get the kids involved so as to develop a work ethic and be skilled.
Sounds like it had a bearing problem, but nothing that could be fixed (or maybe just cleaned & greased).
I'll have to search
online to see if I can locate sales outlets. I'm not in the market for one of those just now, but it'd be interesting to know how much it sells for.