what's the market for this thingy?
you need a larger storage, a wireless keyboard/mouse, and assuming a hdmi-display is somewhere ready for use, with all that i could just bring a 7" tablet or a 10" netbook, or a smartphone.
the only place i see is schools, every student can carry one and use it in the computer lab for projects., but then it might get lost, and you probably end up with more management issues comparing to a thin-client setting or a multi-head configuration.
in short, i don't see a good market for it, no matter how cheap that is.