FILE - In this Dec. 13, 2016, file photo, a skylight is reflected in the rear window of a Waymo driverless car during a Google event in San Francisco. Google's self-driving vehicle division says it's bringing autonomous trucks to the Phoenix area. Waymo announced Wednesday, May 30, 2019, that its fully self-driving tractor-trailers will start driving on freeways this week and will expand to more routes over time.(AP Photo/Eric Risberg, File)
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