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Attempts to produce the experience of a Hoverboard with available technology have involved hovercraft (or air-cushion) vehicles.
Director Robert Zemeckis once joked that Hoverboards were real during an interview, where he claimed that the technology really existed, and parent groups simply would not allow toy manufacturers to produce and market them. 
Several companies have drawn on currently available hovercraft technology to create hoverboard-like products. Alternatively, the Airboard is a disc shaped hovercraft a bit over 6 ft in diameter, but does not resemble the Hoverboard depicted in Back to the Future II. Rumors circulated in 2001 that inventor Dean Kamen's new invention, codenamed Ginger, was a transportation device resembling the Hoverboard. In reality Ginger was the Segway Human Transporter, a self-balancing two-wheeled electric transportation device. References
Originally posted by Teknikal
I think one day hover boards will probably happen I can see some kind of static field or something keeping them on an invisible cushion tter luck finding the video of it.
Some systems use Null Flux systems these use a coil which is wound so that it enters two opposing, alternating fields. When the vehicle is in the straight ahead position, no current flows, but if it moves off-line this creates a changing flux that generates a field that pushes it back into line.
Originally posted by Skyfloating
How could we make the dream come true?
More advanced versions might allow cars to lift from the ground and hover. It could even lead to aircraft that will not need wings at all. I can't help thinking that it sounds too good to be true.
Satellite formation flying is an enabling technology for many space missions, especially for space based telescopes. Electromagnetic formation flying (EMFF) is a novel concept that uses superconducting electromagnetic coils to provide forces and torques between different satellites in a formation.