While Chinese companies last week showed off humanlike robots playing the zither or grabbing sodas, Tesla displayed its Optimus humanoid inside a clear box, motionless next to its cars. Elon Musk has claimed Optimus can fold laundry, and one day cook, clean or teach children — tech he touts can give Tesla a value of $25 trillion. Musk says Tesla plans to test out the humanoids in its factories next year. It’s unclear how well they can perform right now.