A current vehicle-production employee who started at the company over six years ago said he was surprised by the extent to which Tesla produced its Model S sedan using manual labor when he first started at the company.
"When I first started, we were just barely building 10, 25 cars a day," he said. "We were doing a lot of things manually."
Since then, Tesla's production numbers have increased significantly. In 2013, the company delivered 22,477 vehicles. Last year, it delivered 245,240.