Hoverboards as they currently are seem like a fad that's already over the hill to me. I mean, I don't think there's an imminent boom in popularity that's going to lead to everyone rolling around town on a hoverboard. Seems like a joke item that people got to mess around with for a few days and then it ends up forgotten in the back of the closet.
That being said, if you got that domain, you'd be prepared for the day when they finally invent an actual real hoverboard! So just hold onto it for 100+ more years and prepare to bank hard...