Doctors Said He'd Be a Vegetable. Then He Ran Across America.

Croix Sather -- ultra-athlete, TEDx speaker, author of 'Dream Big Act Big.' Hit by a drunk driver at 14 and told he'd never walk again. Ran 2,621 miles across America. Broke the Death Valley world record. Now at 55, training in Colombia's mountains to reclaim that record. His core philosophy: impossible goals are the only ones worth setting.