To provide a vehicle drive method, system and a vehicle for realizing next generation power and ultra-low fuel consumption vehicle.

In a vehicle drive method, system and vehicle, a heat accumulating means of a power gas generating device 34 is heated by a heat source 30 to generate power gas from hydraulic fluid containing an organic solution, drive flywheel turbines, and a controller 68 controls the heat accumulating means to allow the heat accumulating means to keep the temperature within the predetermined temperature area by intermittently operating a heat source, and a propelling means is driven by a flywheel turbine. Thus, low fuel consumption and environmental pollution of a vehicle are realized.