Tesla is betting its future on Optimus. Here's what we know about Elon Musk's robot.

A prototype of Tesla's Optimus robot. CFOTO/Future Publishing via Getty Images Tesla says production of its Optimus robot will begin "soon" at its Fremont factory. Musk says intelligence, human-like hands, and mass production are the biggest hurdles. Musk says Optimus could create a world of "sustainable abundance," making human labor optional. Elon Musk built Tesla into the world's most valuable carmaker. Now he's betting the company's future on a robot that walks on two legs. Musk predicts…