I like that; an interesting perspective and why I wished that Nikon made a device that would slide into the hot shoe of the D700 and present me with a screen pointing vertically upwards. Don't think I really want a moving rear screen though, on the principle that the fewer moving parts the better the condition in which electrical connections remain.
I am no longer able or willing to lie down in the street or on a beach, fully clad, just in order to get a low vantage point for the camera. Yet, each time I think about my Coke thinggy, the more the ideas come to me that include low vantage points. Perhaps if Mr Nikon bought one of my Coke snaps the company would change its mind and make such a device. I don't hold my breath.
;-)
Rob C