This video is almost 2 years old. I really haven't paid much attention to HoloLens, but lately I've been bombarded with materials from Microsoft asking me to develop for it.

This is actually extremely amazing technology. There are lots of other videos, demos and case-studies of what is being developed -- and you just have to go "Wow!".

I'll see if I can find a newer, cool real world demo after posting this.

Here's one:

This one is a demo from over a year ago, but still cool:

This is a newer one, a case study for a game being developed:

Last one for now, this is a year ago, what Volvo is working on: