the video is a hoax
but from what I have heard this is either 1) a publicity stunt to promote back to the future 4
or 2) a real product in testing R&D
they say thru out the year they will be doing live demos thru out America....but time will tell
the website also have a timer at the top that says Dec 2014 as the destination.
Funny story: one of the producers from the Original movie at the time came out and stated that the Hover boards are real but parental advisory groups wouldn't allow the company to let them produce them...which was complete BS but funny