As far as I know it had been found that McDonald's coffee was significantly hotter than the temperature other restaurants kept their coffee at.
We have a Filterfresh coffee machine at work that dispenses coffee it brews right on the spot, seconds before it enters your cup, and I guarantee you that it's nowhere near 190F, not even 150F, probably closer to 120F. (I haven't exactly measured it but I do know that I don't need ice to cool it down before drinking it).
I believe it had been stated in the case that the reason for brewing coffee at the higher temperatures is to get as much mileage out of the coffee grounds as possible.
