motorcycle drill formation riding

http://www.youtube.com/watch?v=INMb7sVgIHE&eurl=http://japanesenostalgiccar.com/blog/page/30/

This reminds me of one I watched that was better due to more complicated drills, and more bikers, it was Italian cops in the 50's

My guess is that there is no video of a better and bigger formation drill of motorbikes.