Level 5 autonomy is coming but no thanks to Deep Learning
Unlike the brain, a deep neural net cannot see an object it has never seen before. There will be no fully autonomous cars until we solve the AGI problem. We need breakthroughs in instant object detection, a common sense or causal understanding of the world, prediction and planning. Once you have that, you won't even need fancy sensors like Lidar, radar, infrared cameras and such. A simple movable binocular camera will do. Above all, you won't need to test the system for millions of miles. The machine will learn to drive just like humans do.