Over the past few years i've become friends with my neighborhood's USPS mailman.
While it doesn't get as hot here as other parts of the country, it's pretty awful what he needs to deal with once temps reach 80+. his truck is like sitting in a metal can. he does what he can to park in shady areas but otherwise he's basically being cooked when he needs to go inside to get mail or drive it from stop to stop.
FWIW there are ICE and EV versions of the new trucks... There are a lot of benefits for the EV version, but I think both have AC. Not sure idling the engine to run the AC would be feasible, though. "Idling" an EV to run the AC would have much less "fuel" impact.
While it doesn't get as hot here as other parts of the country, it's pretty awful what he needs to deal with once temps reach 80+. his truck is like sitting in a metal can. he does what he can to park in shady areas but otherwise he's basically being cooked when he needs to go inside to get mail or drive it from stop to stop.
these vehicles would've been a huge improvement.