boomboom: Thanks that was it, the uncanny valley. I think this mode of transport will be of more use in hazzardous/extreme places. Sure a wheeled robot could upright itself if it got knocked over, but as you seen, this thing can prevent itself getting knocked over and adapts easily to all terrain types.
Amon: http://en.wikipedia.org/wiki/Uncanny_Valley
Amon: http://en.wikipedia.org/wiki/Uncanny_Valley