| http://www.w3.org/ns/prov#value | - Similarly, it is necessary in particular for fuel cell vehicles to ensure that operating media, in particular hydrogen, is supplied over an adequately widely covered area. [0005] A major advantage of using operating media such as methanol or other carbon- and hydrogen-containing fluids is that methanol, for example, can be made available at filling stations with much less cost than hydrogen gas. [
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