Don't Let Lexus Fool You With Their New Hoverbaord

You're right, it only works on rails made specifically for it. Also you would need to out liquid nitrogen in it every 10 minutes...

Also if you do buy your own, you can decal it out BttF style

Actually there is a way, in theory. Anti-matter, basically in every way the exact opposite of matter, repels, rather than attracts. All matter is attracted to and attracts other matter, and the same goes for anti-matter. But they repel each other. Now, we don't want to put a couple lumps of anti-matter in a hoverboard, since when matter and anti-matter come into contact, they are both annihilated and pure energy is released, so you'd have a pretty cool looking nuke. But the particle that warps space around matter, thus creating what we call a gravitational field, is called the gluon. If this particle could be isolated from anti-matter, we would be left with a sub-subatomic particle that repels all matter around it. This could be kept within a small chamber at each end of a board, and while the anti-gluons repel the ground, they also repel the board above them making it "hover". This could go over any terrain, over water, really anywhere you could imagine to go.

Yeah that is good