A controversial proposal to build a Tesla tunnel connecting Nashville International Airport to downtown is moving forward ...

Looking through the windshield, the other three journalists and I saw what we'd come for — Musk's first tunnel, a 1.14-mile route built to experiment with underground transportation technology.

The project aims to create a 10-mile tunnel that would allow travelers to get from downtown Nashville to Nashville ...

"We have a number of operational questions." Details surface about Elon Musk's new underground project: 'A transformative ...