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Tornadoes kill at least 4 people in swath of devastated Oklahoma
Washington Post· 4 days agoCrews were assessing damage Sunday after a tornado outbreak killed at least four people and leveled...
Tractor-trailers with no one aboard? The future is near for self-driving trucks on US roads
Tulsa World· 2 days agoOn a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve....