“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, ...

Elon Musk reignited his Hyperloop vision, proposing The Boring Company could build a Los Angeles to San Francisco tunnel for under 5% of California's high-speed rail cost. This ambitious claim comes ...