This time, Musk is pre-selling either the coolest non-military flamethrower you ever saw or a neatly crafted prank.
For those who missed the reveal of The Boring Company's flamethrower over the weekend, allow me to bring you up to speed.
If the Twitter reactions are anything to go by, we'd say the lure is definitely working.
While Musk humorously denies that he's setting up the zombie apocalypse, Musk may not be quite right in his assertion that you'd need a giant factory to make enough of the undead for an apocalypse.
They cost $500 each, a tough price to match in the flamethrower market. In order to create demand and exclusivity, only 50,000 hats were to be sold with the promise of a flamethrower being available for purchase after all the hats were gone.
He says a flamethrower is a "super awful idea". His post, taken at a Boring Co. tunneling site, had him using the flamethrower in it.
Just to be safe Musk is also selling "an overpriced Boring Company fire extinguisher", for $30 which is about £22.
Musk founded the Boring Company previous year after getting annoyed by traffic around LA. Musk says the Bureau of Alcohol, Tobacco and Firearms allows throwers with flames shorter than 10 feet, so this one is flawless.
Asked whether the Boring Company's new device was authentic or, in fact, some sort of early April Fools' Day joke, a company spokesman insisted that the device was no joke, according to the San Jose Mercury News.
To order a flamethrower, potential buyers have to agree to the terms and conditions, which state that the device "may not be used on Boring Company decorative lacquered hay bales or Boring Company dockside munitions warehouses".