The Japanese anime film itself celebrates the 40th anniversary of the Lupin III series of movies, which began in 1979 when gentleman thief Lupin III used a yellow Fiat 500. While the film is out now on DVD, the special edition Fiat 500 in yellow livery and graced with Lupin's image won't come around until the latter half of 2009, and probably only in Japan. If Fiat keeps this up, it might just challenge the Ford Mustang for the title of Most Gratuitous Special Editions Differentiated by Inconsequential Details. Thanks for the tip, catgirlshyla!
[Source: Fiat 500 News]