There was a human driver behind the wheel, but they reportedly took their eyes off the road in the seconds leading up to the crash. Uber settled with the family of the victim, but the resulting panic caused the Arizona governor to halt all testing, and other companies voluntarily delayed their own testing until the dust settled. Uber is conducting an investigation into the system alongside the National Transportation Safety Board (NTSB), but the ridesharing company is expected to reach an initial conclusion far ahead of the NTSB's much more detailed report.