Elon Musk under pressure to meet Model 3 pledge

As Tesla CEO Elon Musk is under "time pressure to fix problems," the company has flown in robots and equipment to help build batteries for the Model 3 sedan, according to a Reuters report.

Why it matters: Tesla temporarily halted production of the Model 3 last month, after pushing them out more slowly than originally planned. He pledged to be making 5,000 Model 3s a week by the middle of this year. Per Reuters, Musk says productivity will be dramatically increased by the new battery production, but it's not clear when the new production will be up-and-running. However, Tesla's "lack of consistency...has undercut Musk's production promises in the past." [Go deeper: Elon Musk's mean Twitter persona]