We were plenty impressed when we saw the initial tests of AeroVironment's robo-hummingbird -- now officially dubbed the Nano Hummingbird -- but we can't say they quite prepared us for the final product that the DARPA-funded company is now showing off. Not only does the bot look and fly like a real hummingbird (at least if you don't look too closely), but it packs a built-in camera and a downlink of some sort that's capable of transmitting live video. According to the company, the hummingbird's also able to hover for up to eight minutes, reach speeds of eleven miles per hou
