Speck,
Wow, my Shelby was built 04/07/10, and didnt leave the railyard until May 2, but made it out to Vegas pretty darn quick.
There was a PCM issue with the first 5.0s built and mine was a pre-production car. I thought it would be out even sooner, as I know some folks up there and got them to classify it as "hot", whatever that means, still took almost a month. My GT500 was built on 12/10/07, and I didnt get it until 1/3/08.
What I will tell you as a seasoned veteran of watching the railcar website for hourly updates, it took about 12 days to get it from plant to local yard here in San Antonio, but it was over the holidays as well. I would figure 8-10 days once it hits the railcar.
The actual workings of the Dearborn and Flatrock plants are: The cars and trucks get built, but are then pulled across the street into a yard where they await enough vehicles to load a set of railcars.
Then, in order of easiest access, they get loaded on the railcars, not even in order of how they were built. In other words, first in may even be last out loaded, but consider that there would be a difference of a day or two at most.
The first time I waited for my gt500 to be built, I was very impatient and going through what you are feeling. The second time, the Ford build took even longer, but I knew what I was getting into. It wasnt half as bad. That car's wait didnt even start until Shelby got ahold of it. They didnt finish my car until October 15, so I had to wait over 6 months for it to be built, and if you count that time from when I dropped 15k deposit down January 15, 2010, it was a 10 month wait! But still, it was worth every second.
The Raptor I wanted instant gratification....found one on a lot, and just went and made a deal!