A motorcycle comprising: a combustion engine; a supercharger configured to be driven by power of the combustion engine and to pressurize intake air; a first cushioning body configured to suppress rotation fluctuation of power provided on a power transmission path leading from the combustion engine to the supercharger; a supercharger drive shaft provided on the power transmission path, the supercharger drive shaft being configured to be connected with a crankshaft of the combustion engine and; an endless power transmission member at a downstream side of the supercharger drive shaft on the power transmission path, the endless power transmission member being composed of a chain or a belt; a first rotator provided on the supercharger drive shaft, the endless power transmission member being entrained on the first rotator; a supercharger gear, which drives the supercharger, provided on the crankshaft; and a driven-side supercharger gear meshed with the supercharger gear, the driven-side supercharger gear being connected to the supercharger drive shaft through the first cushioning body, wherein: the first cushioning body is provided at an upstream side of the endless power transmission member in the power transmission direction; the first cushioning body includes at least one of a damper structure to transmit power from an upstream side to a downstream side thereof through an elastic body and a clutch structure to release a connection between the upstream side and the downstream side when a rotation speed of the downstream side exceeds a rotation speed of the upstream side; the first rotator is disposed between the driven-side supercharger gear and a clutch gear for a clutch formed at a portion of the end portion of the crankshaft, in a motorcycle widthwise direction; and the first cushioning body is disposed between the clutch gear and the supercharger gear in the motorcycle widthwise direction. a combustion engine; a supercharger configured to be driven by power of the combustion engine and to pressurize intake air; a first cushioning body configured to suppress rotation fluctuation of power provided on a power transmission path leading from the combustion engine to the supercharger; a supercharger drive shaft provided on the power transmission path, the supercharger drive shaft being configured to be connected with a crankshaft of the combustion engine and; an endless power transmission member at a downstream side of the supercharger drive shaft on the power transmission path, the endless power transmission member being composed of a chain or a belt; a first rotator provided on the supercharger drive shaft, the endless power transmission member being entrained on the first rotator; a supercharger gear, which drives the supercharger, provided on the crankshaft; and a driven-side supercharger gear meshed with the supercharger gear, the driven-side supercharger gear being connected to the supercharger drive shaft through the first cushioning body, wherein: the first cushioning body is provided at an upstream side of the endless power transmission member in the power transmission direction; the first cushioning body includes at least one of a damper structure to transmit power from an upstream side to a downstream side thereof through an elastic body and a clutch structure to release a connection between the upstream side and the downstream side when a rotation speed of the downstream side exceeds a rotation speed of the upstream side; the first rotator is disposed between the driven-side supercharger gear and a clutch gear for a clutch formed at a portion of the end portion of the crankshaft, in a motorcycle widthwise direction; and the first cushioning body is disposed between the clutch gear and the supercharger gear in the motorcycle widthwise direction. the first cushioning body is provided at an upstream side of the endless power transmission member in the power transmission direction; the first cushioning body includes at least one of a damper structure to transmit power from an upstream side to a downstream side thereof through an elastic body and a clutch structure to release a connection between the upstream side and the downstream side when a rotation speed of the downstream side exceeds a rotation speed of the upstream side; the first rotator is disposed between the driven-side supercharger gear and a clutch gear for a clutch formed at a portion of the end portion of the crankshaft, in a motorcycle widthwise direction; and the first cushioning body is disposed between the clutch gear and the supercharger gear in the motorcycle widthwise direction.