Self-driving tractors are commonplace (the farmer still sits behind the wheel). Sensors can detect everything from what the machine's doing to what the crop conditions are. Farmers can monitor the progress of planting and harvesting from their iPads, and tractors serve as their own mobile hotspots. It's a skewed reflection of our own increasingly connected world, except farmers have used many of those technologies, like auto-steering and GPS mapping, since the '90s.
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