Elon Musk said coming efficiency improvements “will allow for a 40kWh Cybercab pack,” and that Tesla “will make this in liquid silver, so the colors are not too monotonous,” in a Nov. 7 post on X, Tesla North reported. Not a Tesla App and EVwire reported the same comments.

Why it matters: These are plans, not specifications Tesla has published for cars being built today. Musk did not say when a 40 kWh pack would reach production, what the efficiency gains are, or what range the smaller pack would deliver.

Not a Tesla App and EVwire, citing a Munro Live teardown, said today’s Cybercab uses a 47.6 kWh pack of dry-cathode 4680 cells and weighs 3,113 pounds. Tesla itself has not published an official capacity figure for current Cybercabs, Tesla North noted, and a 48 kWh number that appeared in the post Musk was replying to came from another user, not from the company. A 40 kWh pack would be about 16% smaller than the teardown figure.

Every Cybercab shown so far has been gold, with color mixed into the body panels rather than painted on, Not a Tesla App said. Musk’s wording suggests liquid silver would be added so the fleet is not a single color. In the same post, he again tied Cybertruck’s end to limited engineering capacity and factory space for scaling Cybercab.