https://www.vice.com/en_us/article/pkpqav/how-the-usps-justified-buying-nine-times-more-gas-cars-than-it-needs

On February 2, the Environmental Protection Agency sent a scathing letter to the United States Postal Service, lambasting not only its decision to purchase up to 165,000 new delivery vehicles comprising 90 percent gas cars, but also the manner in which the USPS defended that decision in an environmental impact study. 

The USPS’s decision to buy mostly gas cars is the exact opposite of what postal services around the world are doing. La Poste in France has a fleet of 40,000 electric vehicles, or about 28 percent of the fleet, including pedal-assist e-bikes. 1,200 of the Belgian Post’s 18,000 vehicles will be electric by the end of the year. Italy’s post office ordered 1,744 EVs. Likewise, Japan ordered 1,200. The list goes on. It is also the opposite of what private delivery carriers in the U.S. like Amazon, FedEx, and UPS are doing.