The perception system of a vehicle does not have the same quality and effectiveness as the human eye.
However, we do not have Level 5 autonomy yet. Technological challenges toward Level 5 autonomy include: driving in congestion, driving at high speeds, driving in inclement weather (rain, snow), driving among human drivers, driving in areas where there are no high-density maps, and responding to corner cases. The perception system of a vehicle does not have the same quality and effectiveness as the human eye. To be clear, there are some things that machines can do better than people, like estimate accurately how quickly another vehicle is moving. But robots do not share our recognition capabilities. How could they? We spend our whole lives learning how to observe the world and make sense of it. Machines require algorithms to do this, and data—lots and lots and lots of data, annotated to tell them what it all means. To make autonomy possible, we have to develop new algorithms that help them learn from far fewer examples in an unsupervised way, without constant human intervention.