Just like everything else in life, the global warming scare is about money and power. Governments stand to see a HUGE windfall if they are able to push their carbon taxes through.
These environmental laws have nothing to do with promoting efficiency and energy independence, and here is a great example. In the US, vehicle emission standards are intentionally framed in pollutants per gallon, not pollutants per mile. A two year old could figure out that using pollutants per gallon does nothing to improve fuel efficiency. In fact we find much of the emissions equipment actually decreases fuel efficiency.
As for this global warming consensus, that is a bunch of nonsense. There are plenty of climatologist and scientists who do not ascribe to man made global warming. However, even if there was a consensus it wouldn't matter. Science is about facts not consensus. It used to be the consensus in the scientific community that the earth was flat. Here is a fact. The past decade has been marked by global cooling!
And anyone who thinks a global warming movie proves anything should just get it all over with and get lobotomized. You will be much happier and docile, and your cognitive abilities won't change that much. You won't even notice your constant drooling any more.