I'm not a signature holder, but have a few observations from reading the Founders, Signature and Production delivery threads. All seem to have similar anxieties, concerns and see the same delays. Founders are MIA, Signatures are either delayed production or held in SC, and Productions (like me) just hoping for a VIN. I sometime forget that Tesla is really a small company, with growing pains. There processes aren't as refined. Tesla is a basically a company of "engineers", and as such they by their nature focus on engineering, and may not focus on business acumen collectively possessed by ALL of Reservation Holders. After reading Signature and Founders' issues, I realize that Production holders are further back than I/We or Tesla would like. That said, I think when Tesla resolves what ever needs to be resolved, the flood gates will open. Right now there seems to be a bottle neck (at least by speculation) at final assembly, QC and SC. So based on that supposition, Tesla would rightfully s-l-o-w down all the processes. I respect, and expect Tesla will get it right. So I have not called, since its not my car at issue or my being forgotten -- it is something larger or smaller than one car albeit Signature, Founder or Production.