In March 2023, a North Carolina student was stepping off a school bus when he was struck by a Tesla Model Y traveling at “highway speeds,” according to a federal investigation that published today. The Tesla driver was using Autopilot, the automaker’s advanced driver-assist feature that Elon Musk insists will eventually lead to fully autonomous cars. The 17-year-old student who was struck was transported to a hospital by helicopter with life-threatening injuries. But what the investigation found...