A vehicle comprising: a rotating electric machine (230, 280) including a rotating shaft (240, 290), a rotor (260, 310) mounted on said rotating shaft (240, 290), for corotating with said rotating shaft (240, 290), a stator (250, 300) opposed to said rotor (260, 310) at a prescribed interval, with said rotor (260, 310) and said stator (250, 300) so formed that an air gap length functioning as magnetic resistance is adjustable, an engine (10, 50, 110, 160, 210) connected to said rotor (260, 310) of said rotating electric machine, said stator (250, 300) includes a first stator (251, 301) and a second stator (252, 302) opposed to each other at a prescribed interval, and said first stator (251, 301) includes a plurality of first teeth (254, 304) annularly arranged at a prescribed interval from each other, said second stator (252, 302) includes a plurality of second teeth (257, 307) annularly arranged at a prescribed interval from each other, and a coil mounted on either said first teeth (254, 304) or said second teeth (257, 307) opposed to said rotor (260, 310); characterized in that said air gap length is configured to be adjusted by rotating at least one of said first stator (251, 301) and said second stator (252, 302) thereby changing between a state where said first teeth (254, 304) and said second teeth (257, 307) are opposite to each other and where the distance between said first teeth (254, 304) and said second teeth (257, 307) is smaller than the distance between adjacent said first teeth (254, 304) on the sides of end surfaces (254a, 304a) of said first teeth (254, 304), and a state where said first teeth (254, 304) and said second teeth (257, 307) are not opposite to each other and the distance between said first teeth (254, 304) and said second teeth (257, 307) is greater than the distance between adjacent said first teeth (254, 304) on the sides of the end surfaces (254a, 304a) of said first teeth (254, 304). a rotating electric machine (230, 280) including a rotating shaft (240, 290), a rotor (260, 310) mounted on said rotating shaft (240, 290), for corotating with said rotating shaft (240, 290), a stator (250, 300) opposed to said rotor (260, 310) at a prescribed interval, with said rotor (260, 310) and said stator (250, 300) so formed that an air gap length functioning as magnetic resistance is adjustable, an engine (10, 50, 110, 160, 210) connected to said rotor (260, 310) of said rotating electric machine, said stator (250, 300) includes a first stator (251, 301) and a second stator (252, 302) opposed to each other at a prescribed interval, and said first stator (251, 301) includes a plurality of first teeth (254, 304) annularly arranged at a prescribed interval from each other, said second stator (252, 302) includes a plurality of second teeth (257, 307) annularly arranged at a prescribed interval from each other, and a coil mounted on either said first teeth (254, 304) or said second teeth (257, 307) opposed to said rotor (260, 310); characterized in that said air gap length is configured to be adjusted by rotating at least one of said first stator (251, 301) and said second stator (252, 302) thereby changing between a state where said first teeth (254, 304) and said second teeth (257, 307) are opposite to each other and where the distance between said first teeth (254, 304) and said second teeth (257, 307) is smaller than the distance between adjacent said first teeth (254, 304) on the sides of end surfaces (254a, 304a) of said first teeth (254, 304), and a state where said first teeth (254, 304) and said second teeth (257, 307) are not opposite to each other and the distance between said first teeth (254, 304) and said second teeth (257, 307) is greater than the distance between adjacent said first teeth (254, 304) on the sides of the end surfaces (254a, 304a) of said first teeth (254, 304).