How smart do you have to be to make your very own helicopter? I don’t know. But, I do know that the first dude in this video is that smart. Also smart are the folks who made the firehose-powered hydropack, the single-wheeled motorcycle in which the rider sits INSIDE the tire, the helicopter helmet flying machine, the jet propelled wheelchair, the UFO-looking hovercraft thingy, and all of the other funny and cool DIY vehicles found in this video.
Wait. What!? Check out the below video for more crazyness!