Re:One day? (Score 1)

The whole thing seems to have the ability to be built on a track of some kind. To me, that sounds like it could be built along an entire row of potential houses to be built, rather than constructing a seperate crane for each house. That's where the economic value shows up, in my opinion, on top of the fact that they are working on valid solutions to solve the electricity/plumbing/window problem.