Sarah Priestley: And another big electric maker, Tesla, had a huge year. Elon Musk describes the mass-market manufacturing of the company's lower-price Model 3 as production hell. He was forced to push back shipments by at least three months, and we found out in November that it was caused by a production bottleneck at the Gigafactory. So yeah, big year. They announced a new truck. The semi-truck was announced just last month.