From what I can gather, the process generally works as follows,
You place an order with the Salesman, who in turns hands it to their Stock Controller, who in turns sends it to Jeep Australia, who in turn send it to Jeep International ( Fiat UK), who in turn sends it to Jeep US for allocation and scheduling.
An Order number is then allocated.
The process then reverses the workflow, until that order number is told to the salesman, who in turn has no intention of supplying it to the customer*. (*aka pain in the a**). Since we live in an electronic world, that process should not take more than a couple of days.
Where it begins to come unstuck, is where the various points hang onto the order. For example, the stock controller, who generally is in no rush, and is also probably the person trying to sell paint protection at the point of you paying a deposit, may submit order requests once a week. You also have to assume that the stock controller and salesman hate each other and refuse to communicate with each other.
Also, it is widely known that Jeep Australia is considerered to be the centre of some collossal seminova black hole, where any information is held onto as if they would lose their purpose if divulged. It is also suspected that they may be illiterate, but that has not been as yet misproven.
Another issue, which could hold up your car for lightyears is if there is some new colour, which was reportedly released some years ago, but has never actually found it's way into a spraygun, or a modification to the car's design, that even though they have told everyone that it is in production, they lied.
Now, once you get an Order number, you then need to probably wait until they decide to actually build the car. That can take a further 4 weeks. You think you are in the homestraight at this stage and begin to purchase your first can of tyreblack to celebrate. But NO. The car can then sit in various storage yards in Michigan State. These have various names, and you are safe, as long as the "Java Yard" is not mentioned. If your car goes there, you may as well buy a Ford Territory to tie you over. After all that, your car gets onto a railcar, which slowly goes from siding to siding while the crew have cigarette breaks in the back seat of your new car, as it makes it's way to Baltimore, Curtis Bay. There they place it in a queue, change the queue, then change it again until they need to go home for a sleep. That can take 1 - 2 weeks before a ship arrives to take it on it's penultimate journey to the nearest wharf to your dealer.
Thinking you are in the home stretch, you go out and purchase one of those smelly tree cards to hang off your rearview mirror, but unfortunatly, that may have dried out before you get to see the car. You see now Customs are involved, so they take their sweet time in inspecting your pride and joy. When they find that cigarette ash on the back floor (remember the train crew?), they decide to quarantine for a few weeks just to see if the ash grows into anything. After they realise the ash is in fact ash, they spray it with mortein, then move it to the trucks to take it to the dealership.
Almost there.... Now, the dealer, having no stock to show more potential buyers, has the car displayed in the showroom for a week or so, before calling you and telling you the car is now ready. Congratulation for surviving th purchase of a Jeeep Grand Cherokee.