“A camera on the passenger­side mirror actually engaged on your guiding screen so you can safely change lanes.” Other safety features include warning systems on the front and the sides of the cars.

　　These systems help drivers,

　　but don't replace them. Curator Leslie Kendall of the Petersen Automotive Museum said autonomous cars will make the high ways safer.

　　“By taking out drivers, you also remove most risks of an accident，” Kendall said. He said,

　　“Consumers, however, may be unwilling to lose control. It may take them time to come to realize that the technology is indeed reliable, but it will have to prove itself first.”

　　Mason said the technology already works and the biggest challenge now is getting down the cost for driverless vehicles from hundreds of thousands of dollars to something more affordable. He said this will happen as the technology is improved.

　　5.According to the passage, California Governor Jerry Brown ________.

　　A.is for the idea of having driverless cars

　　B.sponsored the DARPA competition to improve the driverless system

　　C.has already bought a new autonomous car

　　D.thinks that driving safety is the most important issue in his state

　　6.What is the role of the systems mentioned in Paragraph 3?

　　A.They can help cars run much faster.

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