Here's a screen capture video from a racing game called Trackmania. Apparently you can record your track run and then play it back. This video takes 1000 track runs and plays them all back in the same track at the same time. The video itself is pretty crazy looking as all of the cars look like they move as a fluid. There is a second video which has 3000 track runs played back which also looks cool but it isn't edited quite as well. The cars race through the track and each time they hit a jump they spill all over the place. At the end of the video all the cars jump out into the ocean.