Interesting link

I found a video that displays a very similar idea to the Feel Three, albeit not fully realised.

Seems they came up with the idea in 2009 but doesn’t look like they followed it though. Their use of air to lift the platform, like playing air hockey, is quite nice since it means the skin can be relatively weak as the load is spread over a large area. However the airpump is quite noisy and the system would need to stay airtight for it to work. Using strong rotational wheels is a cheaper, simpler solution.