Does anyone know how this works? You go to a dealer to place an order (March), they tell you they have allocation but can only place your order in April - does it make sense? Do they get allocation monthly? Can they only place an order when they get allocation from GM? Is the allocation on a specific model? Trim? Features/package? If they place it when they have allocation, does it mean the GM will accept the order? Why wouldn't the GM accept the order if the dealer has an allocation?