General Electric (GE) and CSX (CSX) railroad will begin field-testing liquid natural gas-fueled locomotives, adding momentum toward a potential transformation of the railroad industry. In trials set for next year, CSX, the 3rd largest U.S. railroad by market value, will run trains pulled by LNG-powered locomotives made by GE. In March, Berkshire Hathaway's (BRKA) BNSF Railway said it plans to test natgas locomotives. BNSF is working with GE and EMD, a unit of equipment maker Caterpillar. GE shares rose 0.4% to 27.15, CSX 0.4% to 26.89.