Just found out about this new product. Apparently, it operates just like the Koornwinder car, except that a spectator builds it for you out of Legos right there for the performance. Personally, I think this is a really nice idea, though I'm wondering if our own Dick Koornwinder had anything to do with this new version?
P.S. If you'd like to see it, check out Hank Lee's Hot List.