TL;DR: They haven't shown the 2TB model yet, nor do they probably have on at this point in time.When I first saw this I thought that this has taken miniaturization to the next level, a 2 Terabyte USB drive that's a big as your finger nail or slightly thicker than a penny! We've all seen this style of USB but usually only as large as 16GB! Actually the one that we looked at on display was only 16GB but the technology behind that particular 16GB stick is capable of scaling to 2 Terabytes. Its a shame they couldn't have the 2TB for us to check out but since it would most likely cost thousands of dollars to pick one up, they didn't want to just leave on lying around.
My guess, just as 512MB was HUGE a couple of years ago, technology will evolve and get smaller to the point where indeed this 2TB becomes mainstream.