They can do simple stuff like steering in a straight line at a constant speed or offset from a previously driven path. They still require a driver in the seat and more complicated operations like for example: unloading into a grain cart from a combine still has to be done by the driver.
> unloading into a grain cart from a combine still has to be done by the driver.
Systems to have the combine take control of the tractor while unloading into the grain cart have been commercially available for a number of years now.
Yeah the autonomous driving was the least interesting part to me. It was everything else that was running semi-autonomously that I found fascinating, and the fact that they aren't integrated. That every piece of equipment has it's own screen.
Not everything has its own screen. The isobus standard has allowed one screen for years. It is easier to create your own screen than to use it. Also there is a lot to watch and so you sometimes want your own screen anyway just to ensure the important stuff is always in eyesight.