Elon Musk likes to show off his toys, and the latest may (or may not) be a component of his new tunnel boring efforts designed to defeat the scourge of Los Angeles traffic. 。

On Friday, amid widespread criticism related to his advisory connections to the Trump administration, Musk showed that he was nevertheless undeterred in his subterranean geekery when he posted an image of what appears to be a component of a tunnel boring machine (TBM).。

Back in December, Musk casually dropped the literally earth-shaking news that he planned to build a tunnel leading to his office at SpaceX under the name of The Boring Company. At the time, it sounded like perhaps just another cute yet lofty brain fart from the founder of SpaceX and Tesla.。

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But with each passing month, Musk has revealed another piece of the puzzle that proves he's absolutely serious about creating a Batcave-style secret tunnel leading to his corporate headquarters.。

The new tunnel image was posted with no explanation of what exactly it is other than Musk's usual attempt at whimsy by posting a single word with the image: "Minecraft." 。

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And just last week, at least one major TBM company rushed to Twitter to "assist or advise" on the project.。

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Days later, at a recent event in California showcasing Hyperloop designs, Musk reportedly divulged more detail about his tunnel venture.  。

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。 "We have no idea what we’re doing,” Musk said, according to the。Los Angeles Daily News。

. "We’re going to get this machine, take it apart, figure out how to make it go much faster while still being safe and not affecting people on the surface. We'll see how much progress we can make, but I'm optimistic tunneling can be improved by at least five-fold, maybe 10-fold. That's really key to a lot of technologies — road tunnels, train tunnels, Hyperloop tunnels." 。

The paper also reports that Musk has obtained a city permit to dig 50 feet below the earth to accommodate his intention to have the tunnel extend from Crenshaw Boulevard to the SpaceX employee parking lot. 。

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Although it's unclear when the project will be completed or just how useful it will be, at least one SpaceX employee is already hyped about the prospect at the company's headquarters, tweeting about the project shortly after Musk announced it on Twitter.。