You may think that self-driving vehicles are relatively new. But self-driving tractors have been in farm fields for two decades.

Two hands-free guidance systems help these John Deere tractors stay on course: sensor paddles on the wheels detect stalks and AutoTrac Vision uses a front-mounted camera to see early-season crops drive down the rows without damaging the crop.

For safety, a worker has to be inside the cab monitoring the operations.  With integrated tablets and apps, farmers can monitor planting and harvesting, yield, and risk.

> Video by CNET News, July 5, 2016

Self-Driving Tractors Sow The Seeds For High-Tech Farming