So this video is an excerpt from a much longer verion of the same video. You've probably all seen skateboard videos before and if you've seen one you've seen them all right (besides skateboard crashs as those are always good). Well the twist in this skate board video is that they greenscreened the skateboards and then edited them out of the video in post production so it looks like the skaters are skating around on air. Reminds me of the second Back To The Future movie with the hoverboards. It really plays tricks on your eyes to seem them skating around on thin air. Only in a few places does it look wrong (messed up in post production).