Eat more meat, make more bio-diesel?

Natural-air cleaning rainforests being burned for cattle grazing

I'm sort of happy to hear that ConocoPhillips and Tyson Foods are forming a partnership to make diesel fuel from animal byproducts. Ultimately, eating meat causes massive global warming pollution, so anything that alleviates some of this pollution is a good thing, right?

At the same time, however, animal fuel is just a bit scary. One can almost imagine, 'Eat more meat. It's not just for supper, it's clean gas for tomorrow's commute' ads. 'Forget those veggies, go for the NY Strip!'