Lexus dropped an interesting video on the Internet this week, sharing a short clip of what looks like a working hoverboard developed by the carmaker. It may seem like a publicity stunt, but as far as we can tell this is really happening.

The hoverboard uses a combination of magnets and superconductors, which are kept cool with liquid nitrogen. The result is a constant mist escaping from inside the board, giving it a pretty cool futuristic effect. It’s unclear if the device will work anywhere, or only on a specially designed magnetic track.

Similar technology is already used for magnetic levitation (maglev) trains, which are widespread in Japan where Lexus’ parent company Toyota is based. The carmaker previously confirmed it is hard at work developing a hover car with the same tech, so it sounds like this hoverboard may be a byproduct of that research.

Either way, it’s pretty exciting news, even if Lexus isn’t sharing many details at the moment. The company says it has an official announcement coming on Oct. 21 2015, which happens to be the day Marty McFly traveled to in Back to the Future Part II.

We can’t wait to find out more, though we’re a little scared to learn how much a first-gen hoverboard will actually cost.