Taken from Vox News Archive :-
Fully two minutes long, it's a Honda commercial call "Cog," the most elaborate Rube Goldberg device you've ever seen set to film, all made entirely of car parts. According to the news stories linked above, it required 606 film takes to get right
The Telegraph story is a nicely written feature that gives a rare glimpse inside the actual photo shoot for an ad this complicated:
As take 300 led to 400 which led to 500, a certain madness settled on the crew. Rob Steiner, the agency producer, started talking about "our friends, the parts", but in the slightly menacing tone of a primary school teacher discussing her charges at the end of a trying day. Some workers on the film went whole days without sleep and had to be asked to stay away from the more delicate parts of the assembly. Others started to have bad dreams about throttle activator shafts and bonnet release cables.
Not sure if "fun" is the right word, but it should go down as one of the best Ads ever