(Photo: Daniel N.)
R2-D2 has wheels and thrusters. C-3PO has legs. But how does BB-8 from Star Wars Episode VII: The Force Awakens move? As a technical question, that's really unclear--until now.
All you need is a cat. Are cats in the Star Wars universe? Never mind. An Ewok child will do the job, too.
-via Tastefully Offensive