From what I've seen, lazy developers tend to rely too much on AI. Don't get me wrong, AI can definitely speed up game development, but it's not quite ready to fully replace humans yet. Honestly, most of the AI-driven games I've played have been pretty average.
Wouldn't super speed without other superpowers have its own limitations? You would have to have insane reaction speed to keep up, and also, the faster you go, the more heat you would generate because of air resistance.