Unfortunately, I bet the greenies will attack diesels anyway. Mark my words.
Diesel engines are a major source of particulate and smog-forming pollution. Diesel exhaust is the most potent carcinogen (cancer-causing substance) in air pollution. And because diesel engines are so often operated where people live, play, work or go to school, they pose particular dangers to human health.
Diesel pollution is making us sick. Studies show that diesel pollution contains more than 40 air toxics including carcinogens and fine particulate matter. When inhaled, these air toxics have been known to trigger asthma and heart attacks. There is also evidence that diesel pollution causes cancer and respiratory diseases. That is why Environment Massachusetts has launched the Campaign To Clean Up Dirty Diesel.
Or the Onion. :-)
Undoubtedly, because the target is our freedom, not "pollution".
Just like all the greenies calling for the use of "renewable energy" and then when a solar power plant is proposed, do everything possible to get it shut down before it's built.