Lots of tough guys here who’d faint (or worse) if it was 128 in their vehicle.
The secret is not staying in your vehicle for long periods of time. The problem with not all, but some of the carriers is that they will drag their deliveries out throughout the day so they get back to the post office just prior to clocking out. That means parking your truck, and sitting in it to pass the time. If you get back too early, they'll put you to work sorting mail, or doing other stuff. We used to have a carrier who parked his truck, and visited somebody in the building across the way. He'd be there for hours. The guy we have now is a sweetheart, and he puts up with my package deliveries without complaint. I live on the third floor, and I can count on him to bring my packages up to my door, and he'll even knock on the door to let me know he's got something for me. The subs who cover for him on his days off, end up delivering packages from another building to me, or leave my packages in the front hall, which bugs the crap out of me, because I don't go downstairs every day to get my mail out of my mailbox.
Yes, suffering is ennobling as long
as someone else is doing the suffering.