The Sandwich Bike

There seems to be no stop on the amount of conceptual bikes seeing the daylight (or mostly not!).  I guess it's a good thing, although results are not always great; to put it mildly...
Just looking at the Sandwich bike, I wonder about the bike's stiffness.
It's not foldable, but you can take it apart.  If you want one, you can order it here - delivery in October.