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The notion of a subterrene, or underground drilling vehicle, is well established within the realm of science fiction, but what are the real-world possibilities for vehicles that drill or melt their way through the subterranean world. Robert and Joe explore in this classic episode of Stuff to Blow Your Mind… (Originally published 6/4/2020) Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.