I would never want a phone that thin, i'd be impossible to hold onto / feel awkward.
Oh my gawd, the Razar is coming back!!! /sarcasm
The Razr at least folds in half to make it easy to hold when not in use
not to mention there are not speakers / microphones on the bottom to speak / play music and its too thin to have a headphone jack / charger....
it says CONCEPT.. can't you read?
I'm not sure that Apple corp can make it.. it is just a concept..