Well I think this self drive stuff is BS. I drive a grain cart on the run beside a $600k combine that has self drive gps super butt lubed auto correcting wizbang top notch corrective drive intergalacticly guaranteed never to waver pure f'n magic controls installed and the Son of a Bitch HIT ME TWICE this past harvest year. Wash outs tend to make a machine suddenly swerve for a second or two before the gps kicks in to correct and in that second or two a combine will move several feet in one direction or the other. I run about 4 ft from the combine head and I saw the threat and was turning out when the collisions occurred. Self drive all you want. I trust my eyes, by brain, and my hands to keep me safe. Not some cuircut board computer jockeys idea of safety. Carry on!!!