Fleet Management: Preliminary Observations on Electric Vehicles in the Postal and Federal Fleets, Statement of Jill Naamane, Acting Director, Physical Infrastructure, Testimony Before the Committee on Oversight and Reform, House of Representatives [open pdf - 736KB]
From the Highlights: "USPS [United States Postal Service] operates almost 200,000 vehicles that provide mail delivery across the country. USPS, along with the rest of the federal government, relies largely on gas or diesel fuel vehicles in its fleet. Efforts to transition the USPS and other federal fleets to electric vehicles are underway. In December 2021, the Biden Administration issued an Executive Order calling for federal vehicle acquisitions to be zero-emission vehicles by 2035, including 100 percent zero-emission light-duty vehicle acquisitions by 2027. This statement provides GAO [Government Accountability Office]'s preliminary observations on (1) USPS's efforts to determine the number of gas and electric delivery vehicles to purchase, and (2) factors that may affect the transition of federal fleets to electric vehicles."
Government Accountability Office: https://www.gao.gov/