Buffett's BNSF cuts ethanol shipper costs amid push for safer train cars

BNSF Railway Co will start offering discounts to ethanol shippers this April if they agree to use new, safer train cars, as it pushes to scrub puncture-prone ones from its rail lines at a faster pace than required by U.S. regulations.  The move by Warren Buffett's Berkshire Hathaway rail company comes even as ethanol shippers have been slow to embrace the new train cars mandated by sweeping new regulations enacted in 2015 after a series of fiery crude oil derailments.