“We have no idea what we’re doing,” declared Elon Musk, standing beside a yawning “test trench” in Southern California in 2017. A crowd of engineering students and tech reporters hooted and hollered, ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock Elon Musk has been intermittently focused on building underground Tesla tunnels for nearly a decade.

New York to Washington in 29 minutes? Elon Musk says it's possible and he has the government's approval to do it (though it's anyone's guess how long it would take to build). "Just received verbal ...

Musk named the machine Godot—the titular character from a play about a man who is expected to deliver salvation but never shows up, leaving believers disgraced and suicidal. The hyperloop’s issues ...