Which company did Elon Musk co-found to develop a high-speed underground transportation system?

Elon Musk co-founded The Boring Company to develop underground transportation systems and tunneling technology.

The company was founded in 2016 after Musk became frustrated with traffic congestion and the slow pace of conventional tunneling. Its early public concepts included underground road tunnels and high-speed transport systems associated with the Hyperloop idea.

The Boring Company has built and tested tunnels, including the Las Vegas Convention Center Loop. The system uses passenger vehicles moving through tunnels and is distinct from a conventional subway because it focuses on smaller tunnels and road-based transport.

The company is sometimes confused with Hyperloop One, a separate startup that pursued vacuum-tube transportation technology. The Boring Company’s central business is tunnel construction and underground transportation infrastructure.