"I'm not an Elon Musk worshiper, but people that would normally buy a Porsche are buying Teslas right now."
Ford, which reported net income over the last five years totalling $26 billion, towers over Tesla on most metrics. Tesla lost $2.3b (NZ$3.2b) during the same five-year span. Revenue was $151.8b (NZ$217b) last year for Ford, compared with Tesla's $7b (NZ$10).
"It's mind-boggling that a company that has the global breadth and depth that Ford has is suddenly valued at less than or equal to Tesla," said Dave Sullivan, an analyst at researcher AutoPacific. "It does not compute."
Tesla sold about 40,697 vehicles in the US last year, according to an estimate by researcher IHS Markit.
Ford delivers that many F-Series trucks about every three weeks.
Investors are looking far ahead to the Model 3, a sedan that will retail for about $35,000 (NZ$49,000). Musk, Tesla's chief executive officer, has predicted that with Model 3 in the lineup, the company's annual production could soar to 500,000 by 2018.
"Tesla is valued like a company that has millions in unit sales, which it doesn't. It took Ford 100 years to get to that point," said Bloomberg Intelligence auto analyst Kevin Tynan. "Is there ever a future where Tesla sells 6 million units globally? Is there a future where Tesla earns money like Ford does?"