iBOT Self-balancing Wheelchair

We have covered plenty of fancy wheelchairs here (including stairclimbing wheelchairs). iBOT is quite interesting though. It is a self-balancing wheelchair that allows users to go up and down staircases and avoid losing their balance. It lets users navigate difficult terrain or stand at eye level.

The above GIF should give you a better idea how this wheelchair works. What do you think? How would you improve this idea?

[H/T]