Tesla is suffering a global downturn in sales in the face of tough competition from China and public unease over the political controversies of its polarizing CEO, Elon Musk, among other reasons. That places the electric-car maker in a sticky situation,

As Tesla suffers a worldwide slowdown in sales, the world’s richest person is pinning his hopes on humanoid robots to conquer the future. But it’s not even clear yet whether they can operate on their