Why does Elon Musk say Optimus and Cybercab will be most of Tesla's value?

In an October 17 post on X, Musk wrote that 'Optimus and Cybercab will be the vast majority of Tesla's value' — a first-principles bet that robotaxis and humanoid robots scale differently from selling cars. These are his claims and goals, not proven results; here is the logic, and how to judge it.

Ask Elon Musk where Tesla’s value will sit in ten years and he does not point at the car business that built the company. Short answer: In a post on X on October 17, 2026, reported by Tesla North, Musk wrote that “Optimus and Cybercab will be the vast majority of Tesla’s value.” His reasoning is about scale: he argued that only superintelligence, robots, solar power and moving mass to space can grow to truly incredible size — “K2 and beyond,” a nod to the Kardashev scale — and that “if you have the first two, the rest will follow.” These are Musk’s claims and goals, not proven results. The first-principles logic is worth understanding on its own terms.

Selling a car is a one-time transaction: build it, sell it, book the money once. A robotaxi fleet is different — the same Cybercab can sell rides again and again, so revenue repeats from a single asset, more like a service than a product. A general-purpose humanoid is broader still: Optimus is aimed at labor itself, the largest cost in industry after industry, so one robot design could in theory sell into warehouses, factories and eventually homes, rather than a single market.

That is how two young programs could outweigh a mature car business in a forecast — if they work at scale. Musk’s post had a lighter footnote, too: the Roadster continues because, in his words, it is “super cool.”1. Watch deployments, not demos.

Count paying Cybercab rides and Optimus units doing real shifts; staged videos are not scale.2. Watch unit economics. A robotaxi wins when its cost per ride undercuts the alternatives; a humanoid wins when its cost per hour undercuts the labor it replaces.3.

Watch the two bets separately. Cybercabs need approvals city by city; Optimus needs reliability in messy, unstructured places. Different problems, different clocks.4.

Weigh timelines against history. Musk’s deadlines have slipped before, so judge the claim quarter by quarter, on shipped hardware.Common mistake: Reading a valuation claim as a product announcement. “Vast majority of value” is a forecast about the coming decade, not a fact about this quarter — treat it as a hypothesis with milestones, not a result.Ad’s take: The engineering logic genuinely holds — recurring services and general-purpose labor scale differently from one-off sales.

But logic is not delivery; the proof will be paid rides and working robots, counted in public.