You're referring to climate change? I would say the multi-year severe droughts being experienced by 90% of the entire west half of the United States speaks for itself there. I don't think that putting a veritable instantaneous stop on greenhouse gasses is even remote viable, even if the United States led that charge, countries like India and China more than make up the difference as emerging industrial power houses. No, I think putting some serious money into perfecting fusion power, biofuels or alternate fuels for industries where combustion is required.
I think the naysayers against electric vehicles are tilting at windmills though, with a Big Oil bumper sticker plastered right on their hairy Caucasian asses. There's a few dozen papers on both the Hubbard Peak and the growing scarcity of oil in oilfields that are played out, our country /will/ run out of oil and we can't wait for that to happen before replacements are perfected.