http://news.yahoo.com/s/livescience/...oseofpollution
This is an interesting read. Not sure how many gassavers.org members would find this useful, but I decided to post it anyway. Pollution is something that is sometimes overlooked when thinking about gas mileage.
I do wish that they had provided more details about how the tests were run. It would have been nice to know what kind of cars were being driven, whether they had cabin air filters, and other things that would affect the results.