My thoughts? I trust them even less than I trust self-driving cars. One of the best ways to manage your crops, is to actually get out there with them. My tractor is high up and it allows me to observe some key things that I'd miss otherwise. Too much technology takes the joy out of farming, in my opinion.
As farmers, it is understandable when we become pessimistic or cautious about new technology. The discussion about autonomous and semi-autonomous machines has been around, but I think such tech target higher-value crops like vineyards, fresh produce and tree nuts.
Technology has come so far over the past few decades, but I'm not sure I would trust a self-driving tractor! They will probably be most useful to corporate farmers. Sometimes I think we rely too much on technology and that we should be trying to simplify things instead.
When a friend mentioned this a few months ago, I brushed it off as a rumour. Technology evolves quickly, but I don't think driverless-tractors could soon become a reality. Perhaps with time, driverless-tractors will be more advanced.