Coal which 43% in 2012 relied on this power source energy for the main electric producer. There are pretty much NO excuses or reasons why coal shouldn't be on a train. Semi-trucks do transport coal faster... but the coal trains carry more and more coal than any other transport for the coal industry. I have no idea why the US Government wants to demolish the coal industry and switch to time wasting and money wasting alternative energy sources like solar power, hydroelectric, or wind power which do not generate enough MW (mega watts) to cherish the U.S.A. Coal, natural gas, and the nuclear power industries are my main focuses for the most efficient energy and cost less to produce everyday. Freight trains have changed how America transports coal & natural gas and nuclear power to their power plants. It's amazing because trucks could not get that much from a truck, it is simple that these 3 main programs are the most important items that freight trains need to transport 100% of the time. Trucks are very well at gravel, concrete, and foods for the families and single persons' in the United States, but my focuses would be on coal, natural gas, and nuclear transport for trains. See! If politicians would be more smarter... they would invest in more oil, coal, gas, and even more nuclear and have better programs for the pre-workers so they cannot mess up one of the plants and have more safer outfits when in mines and power plants! This is a long paragraph, but it's worth reading, and comment on any positive things on this main idea! Thanks!!!