Here is what was explained to me
Each dealer gets X amount of cars.
Every few weeks they can order 1-3 cars so that the cars are doled out nation-wide. They don't want some dealer in some dealership who has 35 cars to sell all 35 and you have to wait for yours. So those who are in line will get their cars "around" the same time. All the #1's, 2"s etc....
That is my understanding.
