Loved the purr of the FedEx vans just as you were about to get that heavily-anticipated delivery? Well, if you're based in Washington, D.C., you might miss out on the sound of the old FedEx trucks, as the company has just upgraded two of them to electrically-driven motors.

FedEx are working with gas-to-EV converters, Amp, with two of them already getting the switch, and if the initial testing goes well, the company could upgrade a further 9,000 vans. Amp Electric Vehicles identified fleets such as FedEx's are perfect candidates for the conversion thanks to the shorter daily range requirements, and usual poor gas mileage.

Considering the amount of deliveries FedEx would do each and every day, this is a great step toward a greener company, and a greener Earth. Tom Hanks would be proud, as would Wilson.