MIDLAND, Texas — When you're out cruising on the interstate, you might one day look over and see a semi-truck driving with no one behind the wheel. But don't worry, it's actually being driven by ...
PITTSBURGH — On a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve. No one was on board. A quarter-mile ahead, the truck's sensors spotted a trash can ...
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