I think I saw that around christmas that vid.
Its scary, but still resigned to the roll of glorified forked lift at the moment
the power pack for that (not only being heavy and large) as well as the required body armour for effective battle situations (you would be ducking and covering as much) I think will give this machine a short battle ready active time - that is limiting in a long fire fight. Though as improvments in energy storage evolve who knows....