1. An apparatus, comprising: a fuel processor including a plurality of physical subsystems; a control system including: a first layer comprising a plurality of subsystem managers, each subsystem manager capable of controlling a respective one of the physical subsystems; a second layer capable of interfacing the subsystem managers to their respective physical subsystems; a third layer capable of interfacing the subsystem managers with the second layer; and a master control manager capable of controlling the fuel processor through the subsystem managers.