How slow can it be? They still want to deliver 5000 cars by year-end. If they're doing 80/day in November/December, that's around 41 days x 80 cars = 3280 cars in those two months (I'm not even including getting the car from the factory to the owner). That would mean they need to produce around 1800 cars in July/August/Sept/Oct, which averages to 450 cars/month, or around 22 cars/day.
I know others have done more detailed analyses on the possible ramp-up schedule, but even on this simple math the projections Tesla is offering don't make sense. Someone on another thread (Sig 900+) said their expected due date from Tesla was October. If that were actually true, I don't see any way Tesla gets anything close to 5000 cars done this year. If they're not going to get 5000 cars done this year, they'd better let everyone know sooner rather than later, because the stock will take a hit when that is announced.
I, of course, prefer to believe that they are under-promising by a month on the expected delivery date and that almost all Sigs will be delivered by the end of September, which comports to a schedule to get 5000 cars done by year-end. (fingers crossed)