Since then, Tesla has raced to iron out kinks in the assembly process, mainly by scrapping some complicated robotic machines that proved ill suited to certain tasks, and hiring hundreds of workers to replace them.
“One of the biggest mistakes we made was trying to automate things that are super easy for a person to do, but super hard for a robot to do,” he said. “And when you see it, it looks super dumb. And you are like, wow! Why did we do that?”