Project Glass: A toy and a lifesaver?

Google has released its first official preview of "Project Glass," aka Google Glasses. In 2:30, Google envisions a world in which its Bluetooth-enabled glasses help a person navigate life through Android-powered visual cues and tips. 

It's all a bit too geeky for me, but props to Google for continuing to push the technology envelope. Perhaps Project Glass has a future not just as a high-tech toy but also in helping people with visual disabilities to improve their lives. 

Inevitably, a spoof of Project Glass appeared online (probably within minutes). There's more than a fair amount of truth in the one below.