EV maker Rivian has set its sights high. The brand wants to take down Tesla's market share, and fast. To do that, they need to make cars. To do that, they need a place to build them. In light of that, the brand has begun construction on a second factory out on the Texas plains. However, this isn't a solo venture. Rivian, like many EV automakers, got a nice helping hand from Uncle Sam. To the tune of millions.