Because they were made in the last week of the year, and it takes a couple of days to ship them to the destination service center which has to make an appointme

Because they were made in the last week of the year, and it takes a couple of days to ship them to the destination service center which has to make an appointment with the new owners to do the delivery and finish the paper work. Tesla counts a car as deliverd only when the new owner has taken posession of the car. So Tesla always has quite a few cars in transit - about 2000 S/X and the end of Q4 and over 800 M3. Deliveries to the east coast and of course Europe take accordingly longer.