Expensive Daewoo used to run 17:1 lean cruise mode on their Late model camira a few years ago, but as emissions tightened, it was ceased. Ford can not run a stratified charge because they do not have the correct piston design or a direct injection engine. We use the wrong spark plug gap on our cars to run lean. The stratified charge is used by a few manufacturers but is limited to direct injection engine and a light cruise situation, the cars that use it generally have a nox convertor in the exhaust system to clean the nox emissions. Our fuel is not good enough for the nox convertors so the import and operation of cars using this system have been limited in Australia. Euro5 should change some of this as I believe there is standards that our fuel needs to meet. Many people assume using less fuel means it's cleaner, it's not the case and many people just assume that lean is the only way to get better fuel economy, it's not