This autonomous boat is trying to cross an ocean using only solar power

The sun is a powerful source of energy. So powerful, in fact, that Damon McMillan is betting his boat can cross more than 2,000 miles of ocean using only its rays. McMillan is the captain of Seacharger, which is on a mission to become the first unmanned, autonomous boat to cross an ocean using only solar power. It's a project that McMillan and three of his friends have worked on for two and a half years, after being inspired by a robotic sailboat competition. Constructing the boat took a lot of trial and error, McMillan says, and at times it seemed an impossible task.