It's hard to understand how AR / holographic technology could help people in their day-to-day life. There are a zillion potential uses, but all of them seem extremely complicated and hard to pull off.

Take the example of fixing your car. For example, performing your own oil change, or replacing your alternator. That seems like a perfect use case for holo, right? The goggles would tell you what needs to be done and what the next step is.

But that would involve so many technical challenges that it seems very difficult. You, as the creator of FixYourCar holo app, would need need to detect what type of car the user is looking at, what part of the car they're looking at, render an overlay with the correct orientation, and so on. And at the end of all of that, it's not entirely clear that your app is more helpful to them than if they'd just look up a list of steps for fixing their car using their mobile phone.

I guess what I'm asking is, what do you think holo's killer app would be?