Tesla has a business model problem: It can never justify its current stock price by simply making cars

You can be forgiven for not knowing what to make of Tesla’s amazing run and the battling views on whether it can keep racing. Fans are cheering Elon Musk’s speedster from the home side of the bleachers, and naysayers are blasting boos from across the track. Boosters such as Ron Baron, chief of major shareholder Baron Capital, recently forecast that Tesla will mushroom to “at least $1 trillion in sales” over the next 10 years, while a legion of noted short-sellers, including Jim Chanos of Kynikos Associates, were betting big against the electric-car maker when it was far cheaper, and fared poorly when its shares went on a tear. Chanos remains a skeptic, remarking that “Tesla’s not a market leader. The product at Tesla that’s always been first-rate is the narrative.”

Indeed, the more than ninefold jump in Tesla’s shares since September 2019, lifting its valuation from $45 billion to $417 billion—capped by a more than doubling from $200 billion at the end of June—ranks as one of the most astounding performances in the annals of capital markets.

But Tesla is still the glamour model in the ultracompetitive, capital-intensive, mainly slow-growth business of building and selling cars. As this writer noted earlier this year, in a blindfold test, most investors would probably balk at Tesla’s numbers. Tesla’s being touted as a go-go player in the antithesis of a go-go sector. So here’s the question that folks and funds pondering an investment in the EV maker should be asking: Over the next several years, what’s the valuation Tesla must achieve to reward them for shouldering the heavy risk of buying its shares right now? The answer depends largely on how many electric vehicles it needs to sell going forward, and whether achieving those volumes is remotely plausible, considering that at least half-a-dozen rivals with big plans for their own EVs will be vying for the same customers.

The short answer is that given the current size and projected growth of the industry, Tesla can’t get there. It would have to put an impossibly large number of customers behind the wheel. It’s not that Tesla can’t be successful. The killer is that its bubble valuation mandates future performance that simply looks unachievable.

As always, a high-flier’s towering market cap doesn’t tell you how it will perform, but does determine how it has to perform to make you money. Its valuation sets the speed that a racer must beat. In the future, Tesla’s wheels may not come off, but it can’t go fast enough to win for new investors.