This is presuming it is actually AI and not a bunch of very smart though not intelligent algorithms. (essentially an expert system for car driving)

This is similar to how chess human players were soundly beaten using very unintelligent algorithms and learning algorithms are only more getting close with a lot of CPU/TPU effort...

Car control, routing, computer vision and 3D vision enough for driving cars well are not in essence AI-complete problems.

(compare to say making music, writing sensible text or learning complex games with hidden stage and deferred reward or exploring unknown situations)