Andy Macdonald to unveil new Skatercross Skateboard Racing Track at this years Clash at Clairemont.

Andy Macdonald to unveil new Skatercross Skateboard Racing Track at this years Clash at Clairemont.

It's the next big thing in extreme sports. It's called Skatercross Skateboard Racing and a first of its kind in the world. CBS News 8's Shawn Styles reports from Skate Park in San Diego.