I still can't really think of any kind of work where 2 wheels and that body shape would be any better than just having 3 wheels and more stability. It would be just as flexible. Using wheels means it's not like it's going to be doing anything particularly off road anyway, that's for the walking robots.

Literally the only thing I can think of is that this is a pure tech demo to show off how clever they are that will never make it into production at all. Which is fair enough I guess, it certainly achieves it's aim if that is the case.