My wife and I have given up our larger cars we used to own and now we use two smaller, fuel efficient vehicles. We did that in part of high fuel cost and to lessen our dependence on oil from the Middle East. No one in my house has a car that has a V8 or gets less than 18 mpg. I miss my Chevy Suburban and while it was a gas guzzling pig, it was certainly comfortable. I just couldn't justify having a vehicle that size with just 4 people living in the house hold. 7 years ago had the outside of my house stripped of the old wood siding, new energy efficient windows installed, house wrapped in Tyvek wrap, and energy efficient vinal siding installed. We updated the furnace with a newer, more efficient unit and we also keep it at 68 degrees through out most of the winter. We recycle as well. I've done my part and don't use excuses like, "I purchase carbon offsets so please overlook my private jet usage".
How much more do I have to do? These things my wife and I did really put a crimp in our budget and we had to make some big cutbacks. I don't see Al Gore or George Clooney make severe cutbacks to their lifestyles, like I did. If you want me to sail on the S.S Global warming, then you better be on the same boat I am. Excuses walk.