According to a Sony representative the machine works but the company doesn't want to show it off yet. Pretty weird eh:
We could even touch the wireless remote but the machine didn’t work as Sony didn’t want to plug it in. The marketing chap had the lamest excuse of them all, he said that Sony doesn’t want to show the live demo as there is a hidden secret feature that Sony doesn’t want to show off yet.More info over here.
I can guarantee you that it super does not work and that Sony is merely showing what the machine will look like. There was a live demo - but from the developers' machines - of some developers' demos but you can clearly forget about the real hardware.