Abstract: A motorized vehicle equipped with a public service air filter, comprising an air intake an air filter connected by fluid passageway to said air intake. An air outlet is adapted to exhaust the filtered air outside said motorized vehicle. In one preferred embodiment, a static and high voltage discharge chamber is used to ionize the air. In another preferred embodiment, easily changed filters are used. In another preferred embodiment any combination of above said filtration systems may be used.