rice farmer charlie mathieu sold his water rights back to the city of los angeles. it was more profitable than growing crops. >> this is really just the beginning of the story for california how it's going to master the challenge of less water than usual. >> thanks so much for watching. >> see you next time. [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org] >> here is your host. >> hi there and welcome from our studios in berlin. glad you could join us and here's how our highlights of the past week have shaped up this time around -- how tomorrow's cars will be driving themselves. jason decaires taylor and his underwater art. scenes of switzerland. the enchanting landscapes of engadin. cars that drive themselves. it's one of the coming trends in automobile manufacturing. and while mercedes and audi are already well on the way to developing computer-driven vehicles, another model was turning heads at the geneva