This is a 2 mile test tunnel. We've had the technology to drill tunnels and transport people in them on tracks for more than a century. The hard part is figuri

This is a 2 mile test tunnel. We've had the technology to drill tunnels and transport people in them on tracks for more than a century. The hard part is figuring out how to do it significantly cheaper (10x reduction) than current methods and they haven't presented any data on that yet.