The 5 people from Moscow, Beijing or Dubai who are willing to pay 50 or 100% premium to be "the first kid in town" will likely get their cars before your production number is delivered to you. I am sure there will be quite a few Signatures waiting to be unloaded with no miles on odometer for this exact reason.
First five signature AWD model S P85++ might garner $100K premium if they were proven to have been driven by Musk for some laps on the test track at the factory before shipping.