Vehicle Engineering refers to a branch of engineering that focuses on designing, developing and manufacturing vehicles such as cars, trucks, buses, motorcycles or even aircraft. It involves integrating various sub-systems like engine, transmission, suspension, steering, braking, electrical systems etc., into one coherent system to ensure optimal performance, safety, comfort and fuel efficiency. Vehicle engineering also encompasses the study of alternative fuels such as electricity or hydrogen for powering vehicles in an environmentally friendly manner. It is a multidisciplinary field that requires knowledge of mechanics, electronics, thermodynamics, materials science, aerodynamics and other related disciplines to design and develop efficient and safe vehicles.