In this undated photo provided by General Electric, GE's Evolution Model ES44C4 locomotive is shown. GE said the locomotive uses AC electric technology, which reduces the amount of fuel it needs by 17 percent compared with the DC-powered locomotives that are commonly used by transportation companies. AP Photo logo AP Photo 6 months ago

In this undated photo provided by General Electric, GE's Evolution Model ES44C4 locomotive is shown. GE said the locomotive uses AC electric technology, which reduces the amount of fuel it needs by 17 percent compared with the DC-powered locomotives that are commonly used by transportation companies.