Palpatine I agree with much of your premise, but it's important to distinguish between variable cash needed to fund operations (COGS) and non-variable/fixed CapEx. Night and day issues, and the former has a massive impact on discounted cashflows, the latter a much less significant one.
With a Cash Conversion Cycle of -15 days, Tesla literally books revenues with profits BEFORE booking costs because of their revenue and expense model. Operating cashflow required per product (vehicle) is essentially nonexistent at this point, and all that remains is CapEx, which I do agree requires cash, but as you say this should be ridiculously simple for a company with as enviable an income statement and cashflow profile as Tesla.
Under either scenario, to get that CCC, they need a healthy balance sheet (aka lots of cash) to get those terms from suppliers. Correct?
As to CAPEX, everything is proportional. We can project towards Gen III numbers a bit comparing with current Model S numbers. To handle 300,000 cars per year, they will need proportionally more production equipment, parts, employees, service center space, Superchargers, etc. Tesla Motors is a tech company and based on their history, their balance sheet with be safer than comparable auto companies. More equity, less debt. To me that would indicate more dilution coming to scale up.
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Surely that depends on the amount of profits. Tesla projects gross margins greater than 25%, which I understand is much larger than other automakers have (except Porsche). So I'm not sure Ford and GM are appropriate examples for comparison.
During the growth phase their margins per car might be 25%, but that doesn't mean it grows cash on the balance sheet. It just helps them stay closer to cash flow neutral to plow those gross profits into other areas of the business.
Large auto companies (Porsche, GM, Ford) also don't have the new startup expenses that Tesla will have in the next few years. Their distribution and support networks are already established. Tesla still needs to establish that network and scale it up.
If you listen to the last conference call, Tesla is not guiding anyone to believe their cash will grow. They specifically said they are aiming for cash flow neutral, but with their current CAPEX that will be tight. They might report earnings, but cash balance can still fall while being "profitable". Nobody should be surprised if cash balances decline as they gear up for Model X. $750 million in the bank as of the last report. I would expect they can get as low as $400 million before doing another market offering of either debt or equity.
That is not a bad thing. It is to be expected during a heavy growth phase with large CAPEX. I really think we are only talking about 7% to 10% dilution to get to Gen III.