And before you object based on efficiency -- trains aren't that much more efficient than flying. Below is a link to a PDF with more information about energy ef

And before you object based on efficiency -- trains aren't that much more efficient than flying. Below is a link to a PDF with more information about energy efficiency: http://adl.stanford.edu/aa260/Lecture_Notes_files/transport_fuel_consumption.pdf http://adl.stanford.edu/aa260/Lecture_Notes_files/transport_... These figures suggest that the train is the most efficient form of travel and that plane is one of the least efficient forms of travel (although it is better than hovercraft for long distance travel).