For those of us trying to live a greener, more carbon-conscious life, the first two commandments should perhaps be: “Thou shalt not own a car” and “Thou shalt not fly away on holiday”, writes Elizabeth Rosenthal recently in the International Herald Tribune. Let’s leave out the vexed question of offsets which can become a grotesque exercise in self-justification, such as the couple who recently proclaimed that they only had one child and a small car to offset their one overseas trip a year. status go back to public transport, and few drivers manage to cut down on their air or car kilometres, even if they appreciate the need to do so. Finally, car owners tend to buy bigger, not smaller vehicles as they move through their car-owning lives. All of which means that personal carbon dioxide cuts are not happening in the areas that they most need to.