The USPS plan was to buy a mixed fleet with around 10% being EVs. That's a pretty good start on supplying the eco-nazi areas.
This seems like a smart plan...buy a few electrics & see what happens. Maybe it would help to quiet down the Eco-Freaks. The USPS would by then have a good idea on where to move forward. The electrics should be placed in varying climates; maybe splitting them between the east coast & the west coast.