if it can stop at a red light by _looking_ at the lights, then it has a level of 1) vision 2) rules, and 3) "understanding" (in quotes since it's just an algorithm).
So if the road is blocked, the car will see it and adjust appropriately. If it's not in this revision of the code, it will be in an upcoming one.
As for the best ever use, here it is: you tell your car to drop you at the restaurant and go park kilometres away where parking is free. When done dinner, you text your car and it comes get you.