Since I'm not getting Sport *or* the panoramic roof *or* the 21" wheels, and I don't need the rear-facing child seats (...but I might get them anyway), I'm really hoping my "basic" Signature will come in under $100K. I haven't budgeted for more than that, and I felt I was leaving a generous allowance for the "Signature premium".
On another topic, if michiganmodels or someone else in Detroit will be able to offer the use of an HPC, I may have found a way to get from Ithaca, NY to Grand Rapids in one day in the model S (a trip which might happen in December 2012)... there seem to be kind Tesla owners or future owners in Buffalo and Rochester, so that would do it. It's looking like the network of model S owners will be *large* (compared to the network of Roadster owners) so a number of trips may become quite easy. I wish Tesla would finalize pricing and availability on charging options; I'm kind of cooling my heels waiting to see when I can call my electricians.