A diesel engine with 10 cylinders and 100,000 horsepower has recently been installed in a locomotive Considering that in America 99% of locomotives are diesel-electric hybrids, the 'GE Evolution Series' locomotive holds about 5,000 gallons of diesel. The effectiveness of fuel for trains is measured in tonne-miles, and the length of trains produces different results. For instance, in 2009, CSX trains have reached an average of 468 miles per gallon per tonne, which means that trains can travel anywhere, from 6,000 to 16,000 tonnes. The locomotive, which is currently in operation, shows promising results.