Optimus bots dancing at Robotaxi CyberCab event

Elon Musk introduces an army of Optimus robots, says people will be able to buy them to complete tasks.

Musk said attendees could walk up to the Optimus robots who would do things like serve drinks.

"At scale, you should be able to buy an Optimus robot for $20,000 - $30,000."

"It can walk your dog, mow your lawn, get the groceries, just be your friend."