vehicle inspection(An official periodical examination of an automobile, truck, boat, airplane or other means of conveyance to determine compliance in design or operation with legal standards for safety or pollution emissions)
vehicle manufacturing industry(A sector of the economy in which an aggregate of commercial enterprises is engaged in the manufacture and sale of equipment that conveys people, goods or materials by land, air or water)
ventilation(The process of supplying or removing air, by natural or mechanical means, to or from any space; such air may or may not have been conditioned)