A look at Elon Musk's bet that Tesla's future is in its Optimus humanoid robots, which for now rely on human helpers and still face commercial challenges (Becky Peterson/Wall Street Journal)

A look at Elon Musk's bet that Tesla's future is in its Optimus humanoid robots, which for now rely on human helpers and still face commercial challenges (Becky Peterson/Wall Street Journal) - Tech Sentiments