Self driving cars are here today, driving in city traffic. Self driving a truck from one field to another seems like it would be eminently doable as far as the technology goes. However, I doubt a bunch of humanoid robots is the optimal robot configuration for harvesting lettuce. Tesla made 1.6 million cars in 2025. Toyota made 11 million. If we handwave that a humanoid robot is roughly as hard to manufacture as a car at scale, there's gonna be a lot of robots.