Elon Musk’s Terafab may very well be the most ambitious undertaking Tesla (NASDAQ:TSLA) or, really, any of his other incredible companies to date. Make no mistake, highly-capable Optimus robots, reusable rockets that deliver payouts into space, and even longer-term plans of going to Mars are not without their own share of ambition. That said, when ... Elon’s Terafab Is Moving at “Light Speed” — and That Could Mean Big Things for Tesla