This is great. Postal delivery vehicles do a relatively small number of miles in a day and then return to a central facility every night. Obvious candidate for electrification https://about.usps.com/newsroom/national-releases/2022/1220-usps-intends-to-deploy-over-66000-electric-vehicles-by-2028.htm
USPS Intends To Deploy Over 66,000 Electric Vehicles by 2028, Making One of the Largest Electric Vehicle Fleets in the Nation - Newsroom - About.usps.com

WASHINGTON — The United States Postal Service today announced that it expects to acquire at least 66,000 battery electric delivery vehicles as part of its 106,000 vehicle acquisition plan for deliveries between now and 2028. The vehicles purchased as part of this anticipated plan will begin to replace the Postal Service’s aging delivery fleet of over 220,000 vehicles.

@mtsw Would cargo bikes (electric-assist or otherwise) also be useful in really dense city environments?
Delivering difference: Mailing Services uses e-bikes to move mail at UW

With over 80,000 students, faculty, and staff on campus, it’s difficult to comprehend the sheer number of packages, textbooks, course packets and dorm mail UW Mailing Services delivers on a daily basis. Thankfully, those deliveries are now a lot more efficient and environmentally friendly. Sporting neon rain jackets and sturdy helmets, you may have seen Mailing Services drivers cruising around campus on electric assist cargo bicycles.

In Our Nature
@sdwilsh @mtsw In the Netherlands, Germany, and Belgium, we’ve seen postal service workers using cargo bikes to deliver their routes. We haven’t been across the pond since the advent of electric assist bikes, but I wouldn’t be surprised if they’re in use now. Even in flat areas, there can be wind, and anything that reduces fatigue is a plus.