Very cool no doubt and I have seen things similar. However once you buy it and run it a few times it will kind of just sit there. Similar to a model electric train, after you see it go around the track a few times, then what? And I own 6 HO and one O Gauge trains! I say make it into a paper shredder, that would be more fun! Shredding phone books and things!!
Very interesting, if you have 250 K just lying around then don't waste your money on that. Hire me and I will sharpen whatever the hell you want, whenever you want, where ever you want.
Having been into R/C airplanes, I find those motors remarkable, but when I first read the thread headline, first thing I thought of was the government buying $10 pencil sharpeners for $250,000