Seemingly inspired by the famous hoverboard sequence in Back to the Future (but sans Marty McFly), Airboardin' USA attempts to fulfill the fantasies of skaters oppressed by gravity. Airboards float along the ground on a cushion of air, which allows boarders to glide over any conceivable terrain. Grass, water, snow and even chunky cement are open territory for airboarders. The boards can launch hundreds of feet into the air, and they can even ride straight up vertical walls. You don't have to worry about breaking your wrist, so anything is possible.