deciding how/when to make panic stop or evasive maneuvers without routinely becoming a hazard requires advanced AI

determining the path of travel through lanes markings that suddenly fade out while moving in 70mph on a busy freeway requires advanced AI

its pretty clear the self-driving gods are not giving these cars a grounds up understanding of physics and self-preservation. They best thing they come up with is programmed to drive X mph and to respond probabilistically to a large but finite set of training input scenarios.