Also drive through includes multiple drinks and food items as well crammed into that 40 or so seconds.
When timing the serial steps of making a drink, it takes about a minute from start to finish, but their process is to batch and pipeline drinks so that they generally handle 3-5x drinks per batch in a pipeline (repeatable beverage routine), and this is for a lone barista pumping out hot beverages. The other 4-5 people are usually on cashier duty, and drive through duty.
I haven't been able to find any figures excluding queuing, but these figures would seem to cast doubt. Unless Dunkin Donuts are doing the same orders in <30s.
(In the Netherlands it's probably three cups an hour, with looking at the ceiling or the floor in between).
Espressos? probably. Large lattes? Not so much. Steaming the milk would kill the throughput too much.
I would guess that the Italian would do a much higher proportion of shorter and smaller drinks.
[1] "normal" bars in Italy only have two sizes of cups, one (smaller) for the espresso and one (larger) for the cappuccino (used also for tea, chocolate, ginseng, etc.). Large mug-sized cups normally exists only in homes where traditionally you have a caffelatte with bread or biscuits at breakfast (or sometimes instead of dinner)
Agreed its probably a novelty though.