into thinking hoverboards were real. reporter: all in the grand tradition of hoax videos starting with the director of back to the future ii himself. highs the prankster responsible for this behind the scenes special showing stunt men supposedly testing the boards. they ve been around for years. we got our hands on some and put them in the movie. reporter: but now, all that is about to change. the forward thinking founders of hendo developing at long last a real hoverboard. it was a perfect example of a stepping stone. we can t go over hedges or normal sidewalks but we re getting closer. reporter: greg and jill henderson poured their life savings into research. the boards expected to cost 10,000 bucks a piece. the hendersons launched a kickstarter campaign. the hendo hover reached its $250,000 goal in just one day. if all goes according to plan,