I've found that I really don't need to 'see' my GPS in order to tell where I'm going. I have a tank pouch with a USB charger snaked into it, which charges my phone. My phone stays tucked in there and gives me audio directions via the bluetooth headset in my helmet (which I added to my own helmet instead of needing to buy another helmet!). The voice inside my head tells me where to go!
Like others, I have a few concerns about this. For one, not every helmet brand fits every person. What if this particular lid doesn't fit my head shape? What about all the folks who will buy a poor fitting helmet just because of gimmicks like that? Poor fitting helmets are almost as bad as no helmet! Not to mention, who knows how good it'll actually happen when it counts... (If motorcycles didn't crash I wouldn't even wear a helmet! Some folks forget you're not wearing it for high tech gadgets of fashion, it DOES have a purpose!)