Driverless tractors till German high-tech farm

As the harvest nears, the employees of German farmer Klaus Muenchhoff are busy making the final checks on imposing tractors ready to roll into the golden fields.
But these tractors are steel monsters with a difference — driverless and satellite-guided, they can operate on the fields with an accuracy of a few centimetres (inches).
Impervious to fatigue and indifferent to poor visibility, they reduce distances travelled by each vehicle, saving their owner fuel costs and improving crop yields.