I asked Edmunds.com when we can "build" a Model S on their site, and this was their response:
Thank you for contacting Edmunds.
Thanks for sending us this information, we always appreciate user feedback. We are aware of the new Tesla Model S pricing that was just announced, we are already in the process of building this vehicle and it should be available on our site 1/4/12. It will be available at the link below.
Please let us know if we may be of any further assistance.
My guess is we'll be able to "build" it on Edmunds.com before we can using Tesla's fancy "Model S Design Studio"! As a stockholder, I hope it will stimulate more brand awareness and reservations...