BBC地平线：无人驾驶

We follow 20 robot cars on a remarkable race across the Nevada desert. These cars drive themselves. There are no drivers and no remote controls, they must navigate entirely on their own.
　　The first time the race was run, the most successful entrant only made it seven miles into the 130 mile course. Will this year's robots do any better? And will any cross the finishing line and claim the two-million-dollar prize?
　　It's a story of set-backs and crashes, as a variety of teams compete to solve one of the hardest problems in robotics.