Transportation Secretary Sean Duffy opened up on the latest episode of “ Pod Force One ” about his dispute with tech mogul Elon Musk over the billionaire’s push to slash headcount in his department.

Duffy told The Post’s Miranda Devine in the new episode, out Wednesday, that he drew a red line at the prospect of firing so-called “safety-critical positions,” including air traffic controllers.

Every week , Post columnist Miranda Devine sits down for exclusive and candid conversations with the most influential disruptors in Washington. Subscribe here!

“I get along well enough with Elon,” Duffy began. “He has a number of equities that come through DOT,” referring to Musk’s SpaceX and Tesla companies.

However, Duffy emphasized that “Elon — or no one else — is the Secretary. I am. Th

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