Sept. 30, 2022 at 7:41 p.m. PT At Tesla AI Day, an Optimus prototype walks across stage untethered. Screenshot by Sabrina Ortiz/ZDNET Tesla AI Day 2.0 jumped off to an exciting start with Optimus, Tesla's much anticipated humanoid robot, taking the stage minutes after the event began. The prototype took unsteady steps across the stage as it walked untethered. Tesla CEO Elon Musk said the team is working to get the robot available as soon as possible for less money than a car at under $20,000. A video played at the event which showed the robot performing basic tasks such as carrying packages around an office and watering a plant. Optimus is being designed to be a capable robot that can be manufactured in high volumes -- millions of units, according to Musk. Screenshot by Sabrina Ortiz/ZDNET Second, Tesla brought out a prototype that was fully assembled and resembled what the potential final unit would look like. This prototype looked more like what was advertised at last year's event with a sleek and futuristic design. Screenshot by Sabrina Ortiz/ZDNET The team revealed that the hands shown on the Tesla AI Day flyers were the hands of Optimus, which is designed to have a full range of motion in its fingers, like a human. Optimus has biologically inspired hands, made to be useful in any setting pic.twitter.com/octnlLOYxY