No, that would require building the car to spec. The savings here is that the car is already built, and you see the blue car with the extra so-and-so, and they

No, that would require building the car to spec. The savings here is that the car is already built, and you see the blue car with the extra so-and-so, and they then chip it to what you paid for. Having a blue car with extra so-and-so in every horse power engine would mean they'd have to stock that much more.