I'm going to say it here as well. . .but I am going to summarize.
In putting the gasoline in your engine well over 150 lbs of CO2 are created from the refining and transport to you. The most damage you can possible generate in CO2 is a theoretical max of 20 lbs. plus a few tiny amounts of particles from the tailpipe and from the power plants you drop 1lb of expent hazardous to the environment(much more so than your measely .odd grams of anything) coal.
Better Fuel economy at ANY cost = cheaper= more ecologically friendly. the other post is on the VW Jetta TDI vs gas. . .I'll edit a link into it
http://ecomodder.com/forum/showthrea...ison-6184.html
its post 19. . .