The Auto Weekly: Tesla's Semi Play, Rivian's Cheaper Model Promise And Detroit's Market Share Threat

U.S. automakers had a slew of updates this week, including a factory opening, a massive vehicle recall, a truck-plant shutdown and a share warning.Tesla said high-volume Semi production is underway in Nevada, Rivian patched a camera-software defect across most of its fleet, and Ford cut F-150 shift…