shorten this paragraph while keeping all the important information:
The propulsion system of a vehicle is important because it provides the necessary power to move the vehicle forward. Without a proper propulsion system, a vehicle cannot operate efficiently or at all. The propulsion system includes the engine, transmission or electric motor, and other components like fuel tanks or batteries. These components work together to generate the energy required to move the vehicle. A good propulsion system can also improve fuel efficiency, reduce emissions, increase acceleration, and provide a smoother and quieter ride. In addition, the propulsion system plays a crucial role in determining the performance, reliability, and safety of the vehicle.