Fleets of school buses, garbage trucks, delivery vans, postal trucks, rental cars, and municipal transit make up a significant portion of the 286 million vehicles in the U.S. State and federal fleets alone represent over 5 million vehicles. And the heavy-duty trucks, buses, and vans in many of these fleets are some of the most polluting vehicles on the road—while they comprise only 10% of the transportation sector, they contribute 25% of its overall climate emissions.

Let's pull this hidden lever and help bring down transportation emissions before it's too late!