I cannot stress enough how submitting a build to a salesman does not constitute an "order".
Telling your dealer what build you want is not an "order" it is merely you getting in line with a build for your dealer to enter into the system to show GM they have a customer wanting said vehicle.
GM has to give your dealership an allocation, this is how your dealer gets vehicles, any vehicle, Blackwing, Corvette, Tahoe, Malibu etc. Once your dealer receives allocations (usually on Thursday) they then match allocations with the orders to be submitted for the following Tuesday. In the case of a Malibu there might be nobody who is waiting for one and so the dealer will order one for inventory. In the case of a Blackwing, the dealer probably has people in line with a build and the dealer will call up the first person in line stating they have allocation and that they can now order you the vehicle, this is usually where you go over your original build submission and make any adjustments. Allocations sometimes have constraints associated with them, (such as no carbon fiber) so your build cannot include the constraints. If you want the constrained item you cannot order the car and the dealer will go to the next person in line because they can't submit a vehicle with constraints for the allocation.
Once you've decided on your build, it will be submitted, the hard part is over, you now have a vehicle that will be coming. No more guessing games, no more wondering if you will get a vehicle, you will get this vehicle (perhaps 6 months later but it will show up). This is the moment you have now "ordered" a vehicle. Until this happens, you haven't "ordered" anything.
Many dealers do not tell you that they do not have allocations, they won't even tell you wait lists, many people assume they have "ordered" a vehicle by simply submitting a build and they have not, unless the dealer happened to have an allocation the moment you walked into the dealership and nobody was in line (very very small chance this is the case for a Blackwing).
You must inquire before getting in line how many Blackwings the dealer received the prior year (you can also check your dealership on the registry) once you have a number, you need to know what spot in line you are, now you can do some simple math to get an approximate wait time for your allocation.
This is the beginning of the great goat rodeo but once you have an allocation assigned to your build, you're in, you will get a Blackwing.
