The world's first battery-electric freight train, known as the FLX locomotive, was built by the Wabtec company as part of their effort to revolutionize rail freight transport into "a bolder, cleaner, more efficient transportation system". The FLX completed a successful trial run in California travelling for three months over 22,000 kilometres, with an 11% reduction in fuel consumption. Wabtec already has plans for the next model, which will be able to cut fuel consumption by 35%. Eventually the company aims to build a zero-emission train using hydrogen fuel cells, which it believes could cut greenhouse gas emissions by 300 million tons a year if used worldwide.