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Forty years ago, Pennsylvania became a leader in self-driving vehicles when it deployed one to help clean up the nuclear accident at Three Mile Island in Harrisburg.

LAS VEGAS — Rapid progress in the development of autonomous and electric-powered commercial trucks stood out as one of the top themes at a technology show known for everything from consumer electronics to advanced robotics.

Self-driving vehicles are moving off the roads and onto the fields. Deere & Co., the largest farm equipment manufacturer in the world, unveiled a fully autonomous tractor on Jan. 4, propelling it past rivals in the tech space.

A semi-truck completed an 80-mile route in Arizona with no human on board and no human intervention during the trip, using technology developed by TuSimple, the company said Dec. 29.

The auto industry is being upended anew in ways that could challenge Aptiv.

DETROIT — Under pressure from U.S. auto safety regulators, Tesla has agreed to stop allowing video games to be played on center touch screens while its vehicles are moving.

Waymo, the autonomous vehicle unit of Alphabet Inc., is withdrawing from in-person events at CES, joining a growing list of companies avoiding the major technology conference scheduled for next month.

Iveco joined driverless truck technology company Plus for the launch of an autonomous pilot program in Europe and China, the companies announced Dec. 20.

ATHENS, Ohio — The U.S. has opened a formal investigation into the potential for Tesla drivers to play video games on a center touch screen while the vehicle is in motion.

Tesla Inc.’s stock went on a tear after an October deal with Hertz Global Holdings Inc. signaled broader mainstream adoption of its electric cars.