Elon Musk unveils prototype of Tesla’s Humanoid Robot Optimus, says it will cost less than a car

Elon Musk showed off a new humanoid robot on Friday at Tesla artificial intelligence event, part of the CEO’s effort to shape public perception of the company as more than an electric car maker.

Mr. Musk first laid out the vision for the robot, called Optimus, a little more than a year ago at Tesla’s first ever AI Day. At that time, a costumed dancer appeared on stage. This time, Mr. Musk presented a prototype at the gathering that unfolded late Friday in Palo Alto, California.