Hoverboard rules given to 'Back to Future' fans

VIENNA -- It was the day Marty McFly landed in the future -- and Austria's transport ministry was ready with guidelines for hoverboards. Fans of "Back to the Future 2" know McFly arrived Oct. 21, 2015. They also will remember the hoverboard sequence, with McFly being chased by Biff and his gang on flying skateboards. These never may go beyond the prototype stage. But the ministry issued tongue-in-cheek rules on their use to mark "Back to the Future" day...