Smart Glass Concept: The future is transparent?

From Petitinvention, here's a concept for a not-too-distant future product: what might be called "smart glass," augmenting whatever you see through it with, well, whatever info you might want about what you're seeing. The concept isn't much different from heads-up displays (HUDs) used by fighter pilots - just less military, and, if possible, even more awesome. Check out the full gallery of possible applications for this concept, and you might just get the feeling that it's merely a matter of time before this becomes a real - and very useful - product.
[via Smashing Magazine and Small Surfaces]