One side says that global warming exists and is manmade. They go too far and decide that your personal car and incandescent lights are solely to blame
You have a citation for that right? Who makes up this group that makes that crazy claim? "Personal cars cause global warming, but fleets of trucks do not" seems a stretch so where exactly did you hear that one? "Incandescent lights cause global warming but electric air conditioners on the same grid do not" also seems a stretch, who claimed that?
One side looks at that stance as foolish. But they go to far and reject global warming completely
Well the second part I have to give you since http://science.slashdot.org/comments.pl?sid=3760341&cid=43752787 in this very article seems to be doing that. I can't know their motives for the first part though - how have you managed to do that?