In the future, you could fly a plane piloted by robots. The US military invented a robot arm that can fly commercial airplanes using AI. The robot pilot was developed by engineers at DARPA, the Pentagon's research unit. Last year, the robot flew and landed a simulated 737 and has successfully flown an array of small planes. The combination of machine learning with the robotic arm means the robot can act much more like a human pilot than existing autopilot software. Researchers say the technology could ease the workload for pilots and reduce costs for travelers.