In the future, will farming be fully automated?

It's definitely coming but may stop short of complete automation. I've worked with a great many family farms in my past career. Automation lets a family sized unit farm more land more efficiently and that's why.

But the Case autonomous tractor without a cab is crazy. You need a cab to move it down the road to the farm. The tech required to make it be autonomous in the field and road ready at the same time is huge and unnecessarily raises the cost. These tractors are heavily used just a few months a year unlike an automobile where the cost can be amortized over an entire year of use.