I know exactly where they are. I could, for a fee of course, arrange for a very special pizza party... LOL!!!
Seriously, I don't see them having much of an impact in our day to day life. The reality is that a lot of that research is being funded by the likes of DARPA for military applications. They have a long way to go until they can develop a power and delivery system that can even come close to how a human performs, even an old fogey like me. Until then they will have to be tethered to a power supply.
The latest version is untethered in terms of power, but I've no idea how long it can last running off it's power source.