Agricultural vehicle

An agricultural vehicle comprising front and rear axle assemblies supported in mutually spaced relation by one or more vehicle frame members that also support a drive train comprising:

• a) one or more air compressors;
• b) one or more fuel sources, including one or more tanks for gaseous fuel supported by one or more frame members;
• c) a fuel cell comprising one or more fuel cell modules;
• and
• d) one or more electric motors,
• that are operatively connected together, the air compressor feeding air to the fuel cell, the or each fuel source feeding fuel to the fuel cell and the electric motors being connected or connectable to the fuel cell such that electrons generated during operation of the fuel cell cause activation of one or more said motors wherein the gaseous fuel when in at least one said tank is at a higher pressure than when in the fuel cell, the vehicle further including connected between the said fuel tank and the fuel cell in combination a turbine and generator, the turbine on depressurizing of gaseous fuel passing from the fuel tank to the fuel cell rotating to cause the rotary shaft to rotate and generate a cooling fluid flow, wherein the speed of said rotary shaft automatically adjusts according to the generated power.