I dont understand why the model does not all allow for object permanence. Like when a car right next to you keep disappearing in and out the model should never

I dont understand why the model does not all allow for object permanence. Like when a car right next to you keep disappearing in and out the model should never allow that. Same as how the model should never allow for a light to go from green to red instantly. Same with pedestrians disappearing, the model should create a pedestrian when detected and track relative positions even when not actually visible to sensors. Without that kind of thought human drivers would not be able to drive either