[Big Dave]

GenKreton posted:
"...CFCs used by nations which have not banned them..."

Dave sez:
We are on to something here. what is the good of banning CFCs and forcing everyone to replace all their refrigeration equipment when other countries proceed along merrily as before. BTW, DuPont (the big winner in all this) has several plants in India, China, Taiwan, and Indonesia still producing R-12 and Halon.

It is mentally lazy to be an absolutist. As much as I like improving my MPG, if I thought the next MPG would cost me $100,000 Iwould certainly stop modding. In the early 70s there was lots of "low hanging fruit" but that "fruit" has been harvested decades ago. All that is left are extremely expensive measures that will not result in noticeable improvement. For all its vast cost, ULSD/Tier II will not result in a reduction of so much as 1 microgram per cubic meter of either PM2.5 or sulfur dioxide, but it does wonders for the instituional health of the EPA.