Tesla AI Day: Elon Musk teases the Optimus robot, self-driving updates and artificial intelligence

After months of tweets and teases, Elon Musk is attempting to manage expectations ahead of Tesla's AI Day tonight. The tech company's humanoid Optimus robot - teased at last year's artificial intelligence event by a person in a spandex costume - is expected to be the star of the show. Tesla on Friday morning shared a short clip of a pair of robotic hands making a heart shape. The Tesla CEO said that people can expect'lots of technical detail and cool hardware demos' at the Palo Alto, California event that's being livestreamed beginning at 5 pm Pacific Time. Whatever the state of the robot prototype, it has massive implications for everything from manufacturing to domestic life, the service industry, healthcare and more.