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.