FedEx owns 40,000 vans and trucks and burns through 300 million gallons of fuel per year, most of it diesel. A typical FedEx pickup and delivery truck logs 88 miles per day. So FedEx is going electric. FedEx is pursuing other oil-saving options as well, experimenting with hybrid-electric trucks, biodiesel and natural gas. The company’s chief executive officer, Fred Smith, is a vocal critic of America’s oil dependence and has challenged FedEx to cut its fuel use 20 percent below 2005’s level by 2020.