It seems everyone is very much bent on hover boards than anything else in recent times. Personally I think it would be very very hard to keep ones ballance while riding on one of these that were in the movie. They should have a tendency to fly from under the riders feet, most probably sideways. Physics is a bitch and when there's no friction then stuff tends to fly in the easiest direction ;-). (on a side note: it's hard to ride on normal skateboards as it is)