[mojoB]

These systems have no sensors beyond GPS and IMU, and typically only control the steering.

Typically they are following a predefined path, not even having the concept of where the end of the row is, relying on the operator for turning and avoiding any hazards. The most advanced functionality is Machine Sync [1], which is still only using the GPS to synchronize the machines.

Just because the functionality is basic, doesn't mean it's not useful. We are quickly coming to the point where these systems will be installed on every machine. The reduction in fatigue and other benefits are profound.

Another point to note is that getting to this point was a marathon, not a sprint. These systems have been around in one form or another for more that 20 years. Acceptance came in large part with the generation change of the owners. It will be interesting to see if the rollout of self-driving cars follows a similar trend.

[1] https://www.youtube.com/watch?v=GFhuJl3hYm8