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.

Breaking news headlines, stories and live updates on current affairs from across the globe. Complete coverage on the latest top stories, business, sports, entertainment, and world politics news ...

Imagine stepping into a car-sized capsule in downtown Los Angeles and, 30 minutes later, emerging in San Francisco On Monday, billionaire entrepreneur Elon Musk unveiled a transportation concept that ...