This is pretty amazing! It'll definitely require power and motors to actually "walk", i.e. propel itself downhill, uphill or on a straight surface, but much les

This is pretty amazing! It'll definitely require power and motors to actually "walk", i.e. propel itself downhill, uphill or on a straight surface, but much less than what other robotic walkers do. And I don't see the need to make it two legged, either - that three-legged combination is fine by me, as long as it can clean my house, take out the garbage or carry boxes at a factory :-).