The nanobot bit is also creepy. Just read an article the other day about the smallest motor ever created, essentially a spinning molecule that can be directed ergo, used for propulsion and navigation. Of what, you may ask? Well nanobots swimming about in your bloodstream, hunting out riffraff and doing away with it, that's what.
Yeah yeah, tech is cool and all. I'm considerably more worried about the asshats that will make USE of the tech than I am the tech itself. Robots don't kill people, people kill people.
Oh wait, never mind.
http://www.foxnews.com/story/0,2933,518244,00.html