Hybrid-powered vehicles received a huge boost in the United States yesterday when, according to the New York Times (NYT), the FedEx Corporation announced that it planned to replace 30,000 of its delivery trucks with energy-saving, environmentally friendly hybrid-powered vehicles. The company reportedly said that it had already purchased 20 such trucks to begin building what would be one of the first big commercial fleets of hybrid vehicles, powered by both diesel engines and electric motors in a mix controlled by onboard computers, which would be introduced over the next several months in four American cities.