An early prototype of Tesla Inc.'s proposed Optimus humanoid robot slowly and awkwardly walked onto a stage, turned, and waved to a cheering crowd at the company's artificial intelligence event Friday.
But the basic tasks by the robot with exposed wires and electronics — as well as a later, next generation version that had to be carried onstage by three men — was a long way from CEO Elon Musk's vision of a human-like robot that can change the world.
