This was a big thing in the 1990s. A lot of people walked around with heads up displays attached to their glasses. I'm sure technology has gotten smaller, bu

This was a big thing in the 1990s. A lot of people walked around with heads up displays attached to their glasses. I'm sure technology has gotten smaller, but I've not seen anything indicating that google has made a break thru. The google promo video is very much like the kinds of promo videos people made in the 1990s. Here's a picture of what they looked like back then: http://www.sciencephoto.com/media/349371/enlarge http://www.sciencephoto.com/media/349371/enlarge