Video narration
How can an engine spinning so fast move a heavy car without being connected straight to the wheels? Think of a bicycle: an easy gear helps you start or climb; a harder gear lets you travel faster. In a car, engine rotation reaches the clutch. It connects the engine to the drivetrain, or separates them briefly for smooth starts and gear changes. The engine does not simply send its speed straight to the wheels. The gearbox changes speed into the torque, or turning force, the wheels need. Low gear gives the wheels more force but less speed, useful for starting and climbing. High gear gives more speed with less force, useful for cruising. Finally, rotation passes through the final drive and differential to the wheels. So the answer: the clutch connects the engine, the gearbox trades speed for torque, and the final drive sends that rotation to the wheels.