Elon Musk says Tesla Inc. ‘s Shanghai plant “came back with a vengeance” after a COVID-induced three-week shutdown. But their optimism contradicts the fact that the plant has enough parts to last about a week, even at reduced capacity, highlighting demanding situations that congested supply chains pose to manufacturers. Production from many suppliers in neighboring Jiangsu province is still suspended and there are difficulties in transporting portions, Tesla’s China operations team said earlier this week. from automatic portions to new food. The plant’s director of production and operations told state media this week that the plant only had enough inventory…