To freely generate a strong window by traveling a wind generating vehicle within a tube, putting a partitioning the tube when a sufficient force is provided, and pushing the air by the inertial force of the wind generating vehicle.

When a wind-generating vehicle is traveled within a doughnut- like tube and a partitioning plate 3 corresponding a valve is operated, a wind of optional speed can be generated according to the ratio of both tube sectional areas. When the partitioning plate 3 is operated to send a wind after the wind- generating vehicle is run round many times up to a sufficient speed, the inertial force by the dead weight of the vehicle can be used to push the air, and a stronger airflow can be freely formed. When this method is applied to a station in railroad for passenger, a strong acceleration can be obtained. In case of cargo transportation, it is perfect for a strong acceleration in cargo transport, and the necessity of forming and storing compressed air can be eliminated.