The “delivery vehicle” for my 12 pro max today was a UPS employee in his personal car (Honda Accord). Seeing him pull up to the house completely explained the erratic delivery pattern I had been witnessing for the previous 2 1/2 hours.
I suspect UPS put a bunch of employees (or maybe it was 3rd party delivery contractors) on the road today simply to deal with iPhone deliveries and allowed the normal drivers to handle the other stuff. They had to be slammed.
Once the numbers come out I think we will see that demand for the 12 Pro Max iPhones, despite COVID fears, was/is much greater than anticipated.