Nolan Bushnell said he got the idea for Topo/Androbot's canted wheels from watching a Unisom commercial with an animated oval pill rocking (you to sleep). IMO it's more likely that he saw or had an Ideal Smarty Bird in 1964!
"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."
- Pablo Picasso