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I’m in a park. The grass is being mown by a robot.
(lemmy.world)
We thought the rider fell off or something and it was going to crash. Then it turned and kept mowing. Park Roomba!
Another picture:
I built an autosteer called AgOpenGPS for our tractors that pretty much does this. Cost about $1000 per unit. We still sit in the tractor because there's a hell of a lot going on besides steering the tractor, but it will drive the entire field without intervention.
Fields generally have few, if any, objects to consider. I'm not sure this is comparable.