|Wednesday, Mar 13, 2013 - 2:00 AM
"Nation on the Move"
Yul Kwon journeys across the continent by air, road and rail and ventures behind the scenes with the workers who get people and goods where they need to go in a nation whose population is the most mobile on Earth. He visits the Federal Aviation Administration command center, meets innovators creating ways to propel people farther and faster, and sees how transportation analysts keep traffic at bay in Las Vegas by revolutionizing the traffic light. Part 2 of 4 G