Google didn't lead the self-driving vehicle revolution. John Deere did.

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Google has received tons of gushy press for its bubble-shaped self-driving car, though it's still years from the showroom floor. But for years John Deere has been selling tractors that practically drive themselves for use on farms in America's heartland, where there are few pesky pedestrians or federal rules to get in the way. For a glimpse at the future, meet Jason Poole, a 34-year-old crop consultant from Kansas. After a long day of meetings earlier this month and driving five hours across the state to watch his little girl's softball game, he was still able to run his John Deere tractor until 2 a.m. The land is hilly on Poole's family farm, so he drives the first curved row manually to teach the layout to his tractor's guidance system and handles the turns himself.