We're still years off from the truly sci-fi heads-up displays (HUD) that we see in so many movies, but we're not that many years off. GM's latest advance in the field shows what can be done with the entire windshield as a screen using transparent phosphors and ultra-violet lasers together with cameras, sensors and some computing power.

GM officially unveiled the prototype technology yesterday, but today we have the latest videos of the system in action, which adds another dimension to the appreciation of how far the technology has come--and just how far it still has to go before it's ready for our daily drivers.