It would be interesting to know what his glide angle is- how many feet he goes forward for every foot down. That's what will determine how smooth his landing will be.
This is a scam. The device was built first, then when it's function is figured out a patent will be filed and the inventor will die a rich man. For shame, Neatorama.
Actor Dennis Weaver had a documentary where he built a house with old tires. They would line them up and pack them full of dirt with a sledgehammer. What started out as butt ugly turned into one of the coolest houses I've ever seen.