Moscow Unlimited 500+ event from October 2011 from Dragtimes.info. You have to love these Russian guys. They are really going for it on these events. Tons of exotics, great video production. When I grow up, I want to make videos like this. Looks like an awesome party. Kind of like a Cars and Coffee, but the cars are getting driven hard. Click though for the video.
Source: NAGTROC via Skyliner(the Youtubemaster)