god knows about the display quality, but Siemens is still working on their paper thin LCD. In-fact they've finally released some prototype samples to a couple of mobile manufacturers.
personally I thought the airport dolly was far more impressive, as Sony already have a projection TV (I have one ^_^) on the market that uses the glass to diffuse the picture.
A Viao like that realistically could be done now, if they wanted to; but not gonna be holographic by any means mind. It's cool to see some design concepts though for potencial future technology. Especially when it uses current-gen technology.