Which innovative supply chain strategy did Tesla implement during the 2021 global semiconductor shortage that allowed them to maintain production while other automakers faced shutdowns?

Tesla has disrupted not just electric vehicles but also traditional automotive supply chains. Their vertical integration strategy has broken many industry norms, creating both advantages and challenges. This poll tests your knowledge about Tesla's innovative supply chain approach that has helped them scale production of their electric vehicles while managing component shortages and global logistics challenges.

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They rewrote vehicle firmware to work with alternative semiconductor chips that were more readily available
They purchased a semiconductor manufacturing facility to produce their own chips
They switched to an entirely different battery technology that required fewer semiconductors
They implemented a just-in-time inventory system that predicted the shortage six months in advance