Set in motion the drive train

A drive train refers to the parts of the engine that transfer power to the road surface. Drive trains include transmission, driveshaft,axles and wheels. The transmission allows your car to operate whether moving, cruising, or stopping by using gear ratios. Today almost all vehicles have a manual or automatic transmission. In a manual transmission gears are determined by the driver;in automatic transmission,by the transmission itself.  The driveshaft transfers the torque of the engine to other parts of the vehicle including the wheels. An axle is a shaft that rotates the wheel. The wheel Is what sets the Car in motion by spinning on the road. I got all the information above from Wikipedia,   wise-geek , and autos.com. Now that I have discussed how an engine functions, I will go into how to fix these parts when they break.