Earlier this week, Tesla CEO Elon Musk announced that the electric car company would lay off about 3,000 people and work much harder to become profitable. On Wednesday, perhaps in a show of confidence to investors, Musk bought about $25 million worth of Tesla stock. The past few months have been tough for the company. There have been crashes involving Tesla's semi-autonomous mode, battles with investors and attacks on the media over negative coverage. But at the end of the day, Tesla has one thing it needs to accomplish: Make the Model 3 a success. And that is still proving harder than it should be. Maryann Keller, a consultant and independent auto analyst, spoke with Marketplace Tech host Molly Wood about what's so hard about manufacturing this car. (06/14/2018)