Even Yahoo are at it now!?

I see that Yahoo are picking on us poor deffencless 4X4 drivers now. Saw this today: "Burping cows could be doing more damage to the environment than four-wheel-drive cars, warn scientists." Since when is a car going to be more polluting because of the transmission system? Surely the engine size and emmissions has something to do with it? And don't bother with all the " Bald headed men/ blonde women/ school run cracks" , or the "killing the planet" crap. My conscience is clear. I'm proud to drive a 4X4, remember us higher road tax payers subsidise the rest of you.