Look at it this way: Tesla was paying all the capital costs and nearly all the operational expenses / fixed costs of production for the Model 3 program in the second quarter, *and not delivering very many cars*. For the third quarter, they have lower capital costs (since they mostly don't have to redo the stuff they already built), lower fixed costs of production (since they've fixed problems), and are delivering and booking the revenue from twice as many cars.
If a "finance guy" can actually do *basic business analysis*, he should be able to tell that Tesla's only financial problem, for their entire lifetime, has been that they haven't been making enough cars to cover their fixed costs. They are now or at least will be in the fourth quarter, so they'll have strong positive operating cash flow; enough to pay off the March bonds, by nearly all well-founded estimates. (The faster they pump out cars, the more cash, until the next really expensive production line construction.)
I am astounded at the inability of "finance guys" to distinguish between fixed and variable costs, which I really would have thought was basic to finance. But apparently it's not part of the curriculum in finance any more. How odd.
Anyway, Tesla has positive book value, so if there was a cash crunch, which there won't be, they'd be able to get a loan, which they won't need.