I would think once the jigs, molds, and castings were set up, it wouldn't take long to make more. The hardest part is getting the first one set up. It's like cutting lumber. Cutting that first 2X4 takes several minutes of getting the saw positioned, protective eyewear and hearing on, setting the stop up, etc. The second 2X4 takes just a second or two. Same with number 3 and 4 and so on. Hopefully, Elio will make the parts for more than just the one (or at least the jigs are kept till needed again)
agree .... getting more transmissions shouldn't be an issue but building individual motors could be very expensive