Tesla (TSLA) CEO Elon Musk marvels at the wonders of the human hand. "The human hand is an incredible thing," Musk pontificated during Tesla's earnings call on Tuesday evening. The hands on the Optimus robot are central to this next part of Tesla's growth story that Wall Street is banking on, along with the broader rollout of robotaxis. Tesla's Optimus humanoid robot distributes popcorn during its presentation at the Mall of Berlin. Viewers watch a Tesla's Optimus humanoid robot at an exhibition in Hangzhou, Zhejiang Province, China, on May 14, 2026.