Interesting from an engineering point of view and impressive but what useful application is there for us?
Roving harvester? plastic from the surface of the gyres, minerals, artifacts, whatever from the ocean floor?
Of course Jansen uses purely mechanical components for artistic reasons. If we used simple computer instead of the mechanical counter he does for navigation we could get machine capable of deciding wht was “interesting” enough to collect.
Anything that powers itself like this is worth looking into.