Energy Wave, excellent post. People should all contact their City mayor and Congressmen and mention Green Planets Soot reducing Diesel additive Clean Boost. Anything that reduces soot in our diesel vehicles by over 80 percent needs to be a requirement. All our kids are growing up with asthma and other respiratory problems which could be prevented. Since fuel efficiency is increased 5 to 10 percent it would pay for itself anyways, why not breath easier and at the same time save money?