Glassy Glassy Phone Concept

Tokyo-based designer Mac Funamizu has done it yet again - coming up with a fluid concept design that makes us wish prevailing technology has what it takes to manufacture a thing of beauty such as the Glassy Glassy cell phone concept. The entire thing is transparent until you turn it on, where the screen and keypad will then light up for you to press accordingly. No idea whether it has the tensile strength of a standard cell phone, or will it crack all too easily during one's travels? One more thing - where the heck is the battery stowed away?