JonnyB, thank you so much for your help!
My last two updates from JonnyB have been exactly the same. They say:
Awaiting Shipment Origin Received - Ft005 (Autoport Limited ) Ramp 5P, Flat Rock, MI Jun-04-2010, 08:00 ET Jun-15-2010
I'm assuming this means my car has been hanging out at Ramp 5P since June 4th, and it is still expected to arrive on June 15th. I'm wondering if Ramp 5P is the new Ramp 51. Hopefully it'll be shipped out today, and it'll be here in Maryland Tuesday.