Quoted from Patofnaud:They are using that 2012 hoverboard technology that Marty McFly saw when he came up from 1986.
Not to be a stickler, but Marty started out in 1985 and traveled to 2015. Got your years a bit off there...
...only 2 more years until I can get my car hover-converted and my power-lace Nikes... can't wait...