Anti air pollution campaign for Greenpeace. Objective: to stimulate debate about air pollution with Ford motor company as the target. Media: posters (London and Birmingham only). Various poster contractors and quality press refused to carry the ad. Strategy also included a mailing to supporters inviting them to send a postcard to Ford dealers. Publicity led to much media attention. Evaluation: overwhelming results. Ford changed their policy which resulted in catalytic converters being made compulsory on all new cars by 1992. All this was achieved on a small budget