Yes, that 18-wheeler on a Texas highway is driving itself

The semitruck rumbled down the congested, five-lane Texas highway, letting a small sedan pass on its right, then accelerating past another semi on its left.

In the back seat of the truck’s sun-drenched cabin, a middle-aged man watched YouTube videos on his phone. Behind him, a 53-foot refrigerated trailer carried nearly 25,000 pounds of pastries.

Nobody was in the driver’s seat.

Last month, Aurora Innovation, based in Pittsburgh, became the first company to operate a driverless 18-wheeler on an American highway, ushering in an era that could…