"When we combine a high-fidelity environment with a procedurally generated city, that's when we unlock the capability to efficiently scale our business to new cities," said Gandhi. To ensure optimal world creation, Cruise takes into account things like lighting at 24 different unique times of day and weather conditions, even going as far as to systematically measure light from a range of street lamps in San Francisco. In other words, WorldGen becomes the stage where the future simulations are set. When Cruise goes to new cities, it starts with a technology it calls WorldGen, which it says does accurate, large-scale generation of entire cities, "from their quirky layouts to the smallest details," which allows engineers to test out new operational design domains, according to Sid Gandhi, technical strategy lead of simulation at Cruise. But it won't have to remap cities to track changes to the environment that inevitably happen, like lane changes or street closures. The company will still have to map the cities it enters.
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