Formula One cars will use green-grooved tyres at this weekend's Japanese Grand Prix to promote a campaign by the sport's governing body to reduce the impact of motoring on the environment.
The sport is facing a major overhaul next year as it tries to shed its gas-guzzling image for a more environmentally-conscious stance.
The FIA president Max Mosley says motorsport is determined to ensure its own investment will help drive the development of technologies that will benefit the general public.