Without using AI there have been substantial improvements already - I was home for harvest on my family farm last year, driving a JD S970 (last time I drove was a CTSII about 10 years ago).
40 ft front, gps auto steer, radar controlled front height - cognitively it was 10% of what it was 15 years ago.
My uncle had a new X series with a 60ft front that also slaves the chaser bin for unloading so you’re basically automating the unloading as well - it’s wild.
Our country is all to undulating I think to be even close to being fully autonomous anytime in the next 2.0 years but it will be interesting to see how this all develops.
10 years ago the talk of remote tractors was to have one lead manned machine with 1-3 ‘slaves’ machines following behind so the one operator can manage a much bigger area, it’s interesting that this doesn’t seem to be the way they’re going