The Navdy is a HUD (Heads Up Display) for your car and links to your smart phone. Looks like it’s some pretty great technology and it’s an excellent idea for navigation and probably for taking calls. But tweeting?? Texting? Getting notifications? All while driving? That’s idiotic and irresponsible, much less so than doing the same thing right on the phone but still dumb. You are driving a few tons of steel, at speed, in between other tons of steel and often between fragile little piles of flesh, can you just drive please?