There are several regulations that mandate AFV acquisition and use in Federal fleets. Currently Electricity, Ethanol, Natural Gas and Propane are available as motor s for light-duty vehicles.
Electric vehicles run exclusively on battery power .
These vehicles are somewhat constrained in their ability to perform missions but do operate extremely efficiently and cleanly. Nickel metal hydride batteries, although expensive, provide more than a 100-mile range. Manufactured electric vehicles in 1999 include pickups and minivans. Ethanol is a liquid alcohol that can be made from corn, grains or agricultural waste . It is renewable and is stored in a liquid form making it very similar to gasoline in its operation.