Zappos, the online footwear retailer, knows that puny humans are totally inefficient when it comes to doing warehouse work, which is why they've replaced them with an army of box-toting robots. More specifically, an army of robots from the Kiva Mobile Fulfillment System.

The stout orange bots zip around the warehouse, sorting, storing and moving around boxes full of precious, precious shoes. When an order is placed, a robot will go retrieve it from its designated spot and bring it to a person, who will pack it and prep it to be shipped. It makes the whole process faster and more efficient, and you've got to assume that Zappos is passing the savings along to you, the valued customer. Although they did recently stop offering free overnight shipping with every order. I'm on to you, Zappos.

Kiva Systems, via Crave