It's been nearly four weeks since I ordered my Fiat 500, and today I got an update from my dealer with both a VIN and confirmation that we're in D1 status. According to a couple different Chrysler car forums, D1 means that my car is scheduled to be built. This also means I could very well have it in 2-3 weeks.
If it's 3 weeks, then we're looking at a fairly standard 7 week turnaround for the car.
I am SO excited.