A couple of months ago we began reporting on a fatal crash in Arizona involving an Uber self-driving car and a pedestrian. Dashcam video was released and it looked like the area where it happened was dark. However, the NTSB has released a preliminary report that lays the fault of the accident on the software and not the sensors in the system. They say the sensors detected the pedestrian in sufficient time to make a stop, but the software became confused. The bottom line is Uber screwed the pooch. I guess they knew what really happened because they settled with the family very quickly. The preliminary report can be found here. The problem was that Uber's software became confused, according to the NTSB. "As the vehicle and pedestrian paths converged, the self-driving system software classified the pedestrian as an unknown object, as a vehicle, and then as a bicycle with varying expectations of future travel path," the report says.