Else,
I believe it's important to understand the details of an issue in order to resolve it. Why place so much attention upon clean autos when cow "emissions" is such a larger problem?
I have seen a web site where people take photos of themselves flipping off people who drive Hummers. Where are the photos of people flipping off cows lazily chewing their cuds?
Rather than placing blame, which is so much of the argument, why not simply accept where the cause is and work together to resolve it? I think it's much more popular to blame auto manufacturers and big oil than it is to blame the meat industry and people who eat beef, is it not? Yes, but it doesn't have the feel of being a rebel against some big bad corporate evil entity. And I think that that is a problem, that so many people are more interested in blindly following some popular "cause" they know little about.
If cow "emissions" are more a culprit than autos and gas usage, why don't I hear about people boycotting beef and ranches? Because it's not as fun and popular perhaps. It's not as "cool".