Today, an encore show. First, how Westerners get around. Past. Present. And future. Writer Rinker Buck retraced the Oregon Trail in a a covered wagon, and tells his thoughts about retracing the ruts. Then, the strange story of the Denver Tech Center. It starts when a brand new Lincoln got dented downtown. Now, cars may have an easy time, but the same cannot be said for pedestrians. And, we talk with a Colorado author who says we are on the brink of a driverless car revolution, one in which you don't have to own one -- you just call for it.