Expansion efforts are underway for a tunnel project in Nashville. A company owned by Elon Musk is adding to its workforce. This project has been a subject of controversy.

It has received approval from certain authorities, including the state's governor and the airport authority. However, not all local officials are in support of it. Further information about the project and its developments can be found through local news sources, such as WSMV 4 News.

Details about the tunnel's purpose and accessibility are available from these sources.