The problem is that these simulations are far from perfect, and AIs are great at exploiting paths-of-least-resistance. So you'd end up with an AI that could dri

The problem is that these simulations are far from perfect, and AIs are great at exploiting paths-of-least-resistance. So you'd end up with an AI that could drive through your virtual city flawlessly by overfitting on some cues that you wouldn't even notice, but are reliable enough because of the necessarily lower complexity of the simulation. It wouldn't translate to the real world; unless maybe you add enough noise to the simulation to prevent the AI from using too simple cues, but at that point, it's questionable how much insight the AI could still distill from the simulation.