Tube transportation systems using a gaseous mixture of air and hydrogen

A tubular transportation system for transporting one or more passengers or one or more cargos via a capsule along a predetermined route, the tubular transportation system comprising:

• a plurality of substantially evacuated tubes arranged along the predetermined route, each tube in the plurality of substantially evacuated tubes maintained at a pressure that is below atmospheric pressure;
• means for maintaining within each tube in the plurality of substantially evacuated tubes, a gaseous composition comprising a mixture of a first percentage, x, of hydrogen and a second percentage, (100-x), of air;
• and
• wherein the first percentage, x, of hydrogen is picked based on a predetermined power value and a leak rate associated with each tube, wherein the predetermined power value is a function of a first power to pump each tube to the substantially evacuated state and a second power to overcome aerodynamic drag.