Yes, I realize Companies like Trimble have are introducing some add on self steering capabilities but at tremendous cost up to $50,000. And yes I am acknowledge that their are swath guidiance light bars, My brother-in-law owns one and it works very well for his spray pickup, but I can tell you that if you think you can consistantly drive a straight row off of it your crazy or you will go crazy watching the little lights. He thought he could use it on his Cat 45 to plant his corn, It didn't take him long before he turned it off and relied on the planter markers. I know that the STX has a whole lot of extra wires and harnesses in the tractor and the company gu ru's had said they are capable much more new gadgets, just wondering if anyone knew if they were playing with this. I have a hunch that they can not do it so easily. The JD crawler steering is electric over hydraulic so to speak, (Deere has speed sensitive steering etc. The electric part is what makes it so easy to program this, and to add on the self steering GPS does not take that many extra dollars to buy, the good part. Most tractors steering are all hydraulic.