The increase in the CCA rate would indeed encourage the acquisition and purchase of new tractors, and the new tractors coming off the line today have to adhere to the new EPA tier three standards for diesel emissions. The quicker you can get the new equipment, the new tractors, into the marketplace, the quicker the ultimate benefit of lower emissions from those older diesel engines is realized. One of the benefits of getting CCA rates increased today is that you're going to move newer equipment through the marketplace faster.
On February 8th, 2007. See this statement in context.