Late last week the University of California Berkley and Nokia study was held on this stretch of Interstate 880, about 30 miles southeast of San Francisco.

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Nearby on Interstate 40, between 20 to 30 cars were stranded due to flooding rains, said Figurskey.

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The incident caused the closure of about 10 miles of the interstate between Davis and Sacramento until 12:30 p.m.

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At least nine people were killed in Friday's storms, including a mother and her baby sucked out of their car as a deadly twister tore its way along a packed Interstate 40 near the town of El Reno, about 30 miles from Oklahoma City.

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Border Patrol officers originally spotted the white Ford Excursion around 4:30 a.m. off the side of Interstate 8 in western Pinal County, about 60 miles south of Phoenix.

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SolarCity is installing solar panel arrays to power Tesla Supercharging stations built along Interstate highways that let drivers of its Model S sports sedan add 150 miles of range to their vehicles in 30 minutes.

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