In case you never saw it, here is an interview from last year with a Sony engineer discussing the motivation behind the Rolly:
http://www.youtube.com/watch?v=l1cRmnJX_aU&feature=related
About Auri
President, The Auri Group, LLC
Teacher, worked with Steve Wozniak, co-founder of Apple Computer
Lots and lots of other stuff that I should add here...