This terrible accident happened on March 19, 2018, late in the night. An Uber self-driving car, running in autonomous mode with a safety driver behind its wheel, hit and killed a woman in Tempe, Arizona. You can find the detailed investigation results here. From the dash-cam and internal driver-seat camera footages, the accident happened on a poorly lit road with a speed limit of 40 mph. The safety driver was watching her cellphone （possibly watching Hulu) right before the car hit the woman.

Before we dive deep into the potential flaws of a self-driving system, we need to acknowledge that self-driving car is actually the most-advanced application of AI that's is the closest to AGI(Artificial General Intelligence). Driving is a very complex and potentially quite dangerous act. The environment a self-driving car has to deal with could be very complicated that require all kinds of situation awareness: other cars, pedestrians, bikes, traffic signals, signs, weather, road situation, etc. It's true that we've made great progress on artificial intelligence these years, but are we good enough for this task? No matter the answer, we need to do all we can and explore all the possibilities we are aware of, no stone unturned.