This had to be a lot of work, putting the dots all over the street... and keeping time!
http://link.brightcove.com/services/link/bcpid1370868150/bctid3130813001
Except for the whole "it's a viral marketing video (fake)"..
http://www.bit-tech.net/news/2008/11/21/activision-admit-bike-hero-is-viral-marketing/1
Wow... Now I am more amazed that there was a follow-up article where people actually thought this was real.
Of course it was fake, that's not the point... the concept was incredibly cool and made for a great video for Guitar Hero.