He obviously needs a couple more robots in order to be able to walk at a reasonable pace, but I love the concept and the execution, although I’d coat the top of mine with moss and walk barefoot everywhere I went. I can’t help but think of Magneto in the X-Men movie, making himself a walkway out of the iron he he stole from the blood of his captors.
I see potential applications as tour guides. If the bots knew the way, they could provide directions and information, or split off as people change their destinations, all the while conveying people at their own pace. Follow the yellow brick road.
The CirculaFloor was originally designed for use in those virtual reality headsets, so you could be in a small room and walk around a large environment. The stones track your feet and counter your movement. I would imagine this would screw with your balance though, especially when you are essentially blindfolded.