Regarding Tesla's profitability, it's EBITDA profitability, and in the words of Warren Buffet:
"References to ebitda make us shudder-does management think the tooth fairy pays for capital expenditures?"
Certainly this is an important milestone for Tesla. It means that they're getting a handle on their supply chain, but this doesn't make them anything close to a stable company. They still have to get to a point where their cars aren't just profitable, but profitable enough to pay for the factories they're built in. Hopefully this latest influx of cash will be enough to get them there.