Start-up Iron Ox created a fully autonomous farm in San Carlos, California. The hydroponic, indoor farm relies on two robots to plant, care for and harvest all its produce. One of the robots is 1,000 pounds and about the size of a car. It picks up the trays of plants and transports them around the greenhouse. A second machine, a robotic arm, is responsible for all the fine manipulation tasks, like seeding and transplanting. As a tray of plants matures, the mobile robot carries it to the processing area. Here, the robotic arm moves baby plants in densely packed trays to containers with more space. This optimizes space efficiency, because throughout their life cycle, plants are only given the room they need. Co-founder and CEO Brandon Alexander claimed that Iron Ox is able to do the equivalent of 30 acres of outdoor farming in just a single acre on its robotic farm. The company wants to build more small farms near urban centers so produce is fresher upon arrival.