Of course, just about any digital device poses a potential hazard for drivers. But Google seems to expect — if not encourage — Glass users to use the device while driving: While the device gives you the ability to switch between driving, walking, and cycling directions, the current version of its software defaults navigation to the driving mode.

Now, there strikes me as a very simple solution to this problem. My idea: Google should create a way of pairing Glass with the decade’s most exciting trend in in-car tech: HUD (or heads-up displays), which transparently project vital info such as your next turn onto your car’s windshield in a way that allows you to soak it up while keeping your eyes on the road.

In case I haven’t made it clear: I love HUD displays (yes, I know calling them "HUD displays" is like calling something an "ATM machine," but it sounds smoother). I’ve played around with various versions of the tech from various auto manufacturers, and it strikes me as both extremely convenient and potentially lifesaving.

So now lets bring it all home: Wouldn’t it be cool if Google Glass gave you navigation directions while you were walking, but the second it detected you had entered your car, transferred the navigation info to your car’s HUD? This should be a relatively easy solution to program: Both Google Glass and most modern cars have Bluetooth, which allows devices to both detect proximity (key for knowing when the Glass-wearer has entered the car), and transfer the navigation info.