External Graphics Card

Has anyone been following this? I think it’s a great idea and a nice alternative to expensive docking stations or huge desktop replacements. There are a few kinks to be worked out, but I think that with further development this could be a real succes. Imagine taking your low cost 800$ or so laptop with you to work school etc. and when you come home you plug this thing in and play something like Quake 4 at acceptable speed.