Elon Musk's tunnelling firm, The Boring Company, has unveiled plans to build a so-called Tesla tunnel loop under Nashville. The underground freight tunnel will use Tesla vehicles to transport people from the city's downtown to Nashville International Airport in around eight minutes.

It's called the Music City Loop, and the project marks Musk's latest effort to bolster his budding business empire in Tennessee. His artificial intelligence startup xAI, the parent of social media platform X, is building data centers and a power plant in Memphis, on the western side of the state.