Lexus has made a Hoverboard, they have some videos on you tube. It's been a long time coming, and I hope a version of them will go commercial.
That's not the one, there's another that can replace the skateboard. It's a skateboard without wheels and it hovers above the ground.
http://youtu.be/q_BYvUlDviM Pretty cool technology they used. I figured it was bogus until I watched this video.
I think it's a long way from being feasible but it's a great step! Reasons you can't get one now 1. The board only works at the Lexus park. The article online states that the board uses magnets - I'm assuming the parks has magnets everywhere. One day I'm sure we can use board in conjunction with the earth's electromagnetic properties 2. They had to use liquid nitrogen and fill it up every 10 minutes. Im sure in the future we can use other fuels that are more efficient. 3. Lexus doesn't plan to sell it (in the immediate future) - they just using it to tease you and sell their brand (for now).