He passed the pier, watching the virtual waves crash against the concrete barriers. He saw a broken-down car on the shoulder, hazard lights blinking into the void. It was just a static prop, a line of code, but in the quiet of his room, it felt like a scene from a film. The city that never sleeps, even if it's only rendered in pixels.

Before diving into the "how," we must understand the "why." Traditional racing tracks are about speed limits (or lack thereof), apexes, and lap times. City maps with traffic change the objective.

City maps are inherently heavy. They feature massive texture loads, dynamic lighting, and long draw distances. Adding 20 AI cars on top of that can bring a good PC to its knees.