I am pretty sure wearing/using Glass while driving will be banned in germany pretty quickly if its gets popular.

Texting while driving or talking on your phone while driving is simply banned. Even if you are not driving but the engine is running and you talk on the phone, you will get a ticket. The only thing you are allowed todo is using the speakers, but anything that takes your attention away from driving with visual information that is not related to operating your vehicle is problematic.