Elon Musk: Bill Gates said experts told him remote electric semi-trucks are impossible
Tesla CEO Elon Musk posted that when he spoke with Bill Gates in person, Gates said experts told him that remote electric semi-trucks are impossible. Musk questioned the two numbers that determine range—battery energy density and vehicle energy consumption per mile, which Gates did not know. He suggested having a Semi truck independently tested, but Gates declined.
In 2020, Gates wrote that even with significant breakthroughs in batteries, electric heavy trucks are likely never to be practical because batteries are large and heavy, and electricity is suitable for short distances. On the same day, Tesla advanced the production of the Semi: the long-range version is claimed to have a range of 500 miles at a full load of 82,000 pounds, while the standard range is 325 miles, with a pre-incentive price close to $300,000. Energy consumption has decreased from an internal target of about 2000 watt-hours/mile to about 1700 watt-hours/mile, and the battery cells have changed from externally sourced 2170 to in-house 4680.
The pilot fleet consists of fewer than 200 vehicles, having accumulated about 17.5 million miles. Logistics company NFI measured about 1.64 kilowatt-hours/mile, while DHL measured about 1.72 kilowatt-hours/mile under a total weight of 75,000 pounds over a single trip of 388 miles. The usable capacity of the long-range battery is about 822 kilowatt-hours, with peak charging at about 1.2 megawatts, claiming to recharge about 60% of the battery in 30 minutes. The Sparks factory in Nevada aims for an annual production capacity of 50,000 units, with plans for over 30 Semi charging stations and more than 200 megawatt-level charging piles by the end of the year.
In market mechanisms, the buyers are fleets facing rising diesel costs, while the seller is Tesla, which is rewriting the range controversy into volume deliveries. The event is driven by the product launch and the revival of old debates, with capital shifting from diesel trucks to electric heavy trucks and megawatt charging stations; the beneficiaries are vertically integrated companies that can simultaneously control battery cells, chassis efficiency, and dedicated charging, while those under pressure are still using the argument of "batteries are too heavy" to deny long-distance electric freight transport.
Source: Public information
ABAB AI Insight
Musk reduces the engineering problem to two measurable variables: watt-hours/kilogram and watt-hours/mile. Gates concludes with expert consensus but fails to provide assumptions. This is not a polite dispute but a replacement of authoritative citations with independently verifiable tests. At the meeting in Austin, the Semi had already been running freight for fleets like Pepsi, and refusing a road test equates to refusing to let data enter the public ledger.
The capital path is to first use pilot mileage to turn "impossible" into a quotable kilowatt-hours/mile, then replace 2170 with 4680, cutting the target energy consumption by about a quarter, using smaller and lighter batteries to maintain the 500-mile range. On the charging side, using 1.2 megawatt piles compresses the recharging time into the gaps between trips. The Sparks factory's annual capacity of 50,000 units is a settlement of engineering debates into a competition for production capacity.
A similar structure is seen in SpaceX's recovery of rockets being deemed impossible and the early Roadster being judged as electric vehicles not traveling far: both were first priced by expert narratives and then re-priced using public mileage and independent tests. The electrification of freight transport is transitioning from prototype narratives into a phase of scaling and matching charging networks, with pricing power shifting from diesel gallons to kilowatt-hours and charging power.
Structurally, this belongs to technological substitution. The mechanism is that range is determined by density multiplied by efficiency, not by expert impressions; whoever controls the two measurable numbers and repeatable road tests can rewrite "impossible" from public opinion into orders. The cost curve of diesel fleets will be replaced when electricity prices and charging network density are sufficient.
ABAB News · Cognitive Law
- Saying it's impossible but not providing the two key numbers is not engineering.
- Refusing a road test means refusing to let data enter the public ledger.
- Range is not a belief; it is density multiplied by energy consumption per mile.