As reported in Colorado media, some mayors have endorsed a climate change plan whose recommendations include: "strict CO2 emissions-reducing standards for cars, a move which would boost new car prices by about $900 but save $1.88 billion in reduced fuel costs, according to the Rocky Mountain Climate Organization." I was not able to find information about the automobile emissions plan on the RMCO's website, but perhaps I didn't look in the right place. In any case, do any readers know where the above data come from? For what period of time (annual?) and group of people (U.S.? Colorado?) the 1.88 billion savings figure is calculated?

I eagerly await information in the comments, but please don't use the comments to argue the pro/con over the general issue of global warming.