COOLING STRUCTURE

A cooling structure includes: a gas combustion engine driven by gas generated by the vaporization of liquefied fuel; a superconducting motor generating a driving force for driving a wheel; a battery supplying electric power to the superconducting motor; a fuel supply path supplying the liquefied fuel, which is to become the gas, to the gas combustion engine, the fuel supply path supplying the liquefied fuel via the superconducting motor; a first coolant flow path through which a first coolant for cooling the battery flows; and a first heat exchanger that is provided downstream of the superconducting motor within the fuel supply path and exchanges heat between the liquid fuel in the fuel supply path and the first coolant in the first coolant flow path.