If you could somehow project that as a HUD in a car, then you'll have a great solution to a big problem in the navigation space. Many people have trouble reading maps because they have difficulty in translating the pictographic display from some other screen into the roads and signage they see in front of them. If they no longer have to do this translation, then following directions becomes significantly easier for a large class of people that struggle with current navigation systems.

I may be getting too cynical, but almost immediately after thinking "very cool", I wondered how many people would sue the company putting this on the market for leading them from the pavement onto the street.

For navigation, I think this may come over as having better precision than it really has.