Hitachi have just created the “fastest robot” called Emiew. The inventors want it to be able to keep up with people, hence the wheels. Pal, one of the other robots (Chum is the other one), had this to say:
“I want to be able to walk about in places like Shinjuku and Shibuya [shopping districts] in the future without bumping into people and cars.”
But er, what about staircases and kerbs? It’s the old Dalek conundrum…