as the use of public transportation increases , the use of automobiles decreases
automobiles is not another_form_of_transportation. automobile_industry is transportation_industry. car is not used_fro_transportation. automobiles_move_because has engines car is used_fro_transportation. commercial_transportation is driving. transportation is movement. automobiles_move_because has not engines driving is transportation_of_people. automobiles is another_form_of_transportation.