To cleanse the palate, I can’t wait to get one! And ride it in the only place on Earth where it’ll actually work!

The levitation effect of supercooled superconductors has been known for ages now, but deploying it on such a scale requires some serious effort. Namely: lots and lots and lots of magnets built into the ground. The company has built a custom skate park in Barcelona, Spain, upon which its prototype hoverboard can be used.

In fact, this board works only at that custom-crafted park, built at an undisclosed but surely huge expense. Still, it seems to have some limitations, with pro skateboarder Ross McGouran struggling to keep the thing from dragging on the ground at times. That’s despite liquid nitrogen refills every 10 minutes or so.

The liquid nitrogen is needed, per Wired, because superconductors only become superconducting at -321 degrees. (The “steam” you see coming off the board is actually the nitrogen at work.) As the device heats up, that conductive ability fades and the magnetic repulsion that creates the hover effect fades. So if you’ve got a giant vat of liquid N, a highly magnetic surface big enough to skate around on, and the patience to “refuel” every few minutes as your magical board loses its magic, you too can live out the fantasy of a Marty McFly escape scene from one of the lesser “Back to the Future” movies.