3rd-party wheeled rear rack for Birdy

[Amuro Lee]

You can wheeled the folded birdy along just like what you can do on a folded Brompton. Furthermore, one the of wheels is actually a caster which let you change direction easily when pushing the folded bike.
http://tw.page.bid.yahoo.com/tw/auction/e30899483?u=Y3589657620








I think it is much better than the original accessory made by Pacific Cycles. What do you think?
http://www.pacific-cycles.com/prodacc2.asp?cat1=1&cat2=5&pid=5&accid=36&nowPage=2