CNN.com: Pacman breaks out of the arcade

I've been looking forward to this for a long time. Now imagine if they can get that scaled down to a comfortable and fashionable pair of eyeglasses. You could wear them walking in town to find out all kinds of information about your environment... tons of commercial applications. Also would be great for navigation. Instead of having to look at your navigation screen on your car dashboard, the route is superimposed over reality (something very similar to the Pacman dots).

I wonder how long it'll be before that can be scaled down to something consumers will wear. 5 years? 10? More?