I will repeat, "dont assume whats on the paperwork is the amount of miles you will find on the car when you pick it up, if it has 15 miles on the paperwork". I can virtually guarantee it will be less than that, because tesla puts 15 miles on all new car paperwork to give them a bit of flexibility in moving cars around lots / deliveries etc.
If you want some corroboration other than mine, just search TMC for "15 miles".