Re. your other comment about the cardboard plane: Amazing. When I was 9 or so, my friends and me made an 'airplane' in the attic of the house where we lived. We flew it all over the world looking for treasure ;) It's a good thing we didn't see this video or for sure I wouldn't be writing this. That is absolutely amazing what that guy is doing there and to actually attempt to fly is bravery beyond the call of duty. I really hope he succeeds.