The "Hendo Hoverboard" levitates one inch off the ground and is on Kickstarter today.
One year from today, on October 21, 2015, Marty McFly and company are scheduled to arrive from the past--as seen in Back to the Future Part II. And what a disappointment it would be if our future world didn't have hoverboards for Marty to zip around on. But fear not: Hoverboards really are on the way!