Because you live in one of the densest, oldest and most public transit-packed urban areas in Europe, you think that your easy shift to not having a car is worth a damn to hundreds of millions of people who don't live in London, or another big, dense, highly developed city like it? A Texas farmer or Louisiana fisherman isn't just being a selfish, green-hating ass when he or she says that they NEED their truck or car. They really do, to live, and almost every day. What kinds of mental bubbles do some of the privileged people who comment on this site live in?