I don’t know if these have any practical purpose yet. But they are flippin awesome. First they had Big Dog, then I saw Little Dog, now they have PETMAN. Which is a two legged robot that has a human style heel-toe walk and also sports a sweet pair of climbing shoes.
I can totally see a day in the future when we have robots to carry our stuff around. I would keep one in the trunk just so I never have to make a second trip out to the car after going shopping for groceries.