2008 Post Emission Trucks As everyone knows , the trucking industry is experiencing a significant change related to the tractor emission systems. In an effort to get ahead of the game , Cottrell has been afforded the opportunity to get the first look at these trucks. This change is expected to provide significant air quality improvements and minimize changes on maintenance programs. Take a moment to look at the post emission trucks for Freightliner, Peterbilt, Western Star, and Sterling. Most of the tractors were able to retain their previous over all height and bumper to back of cab setting. “OUR EXPERTISE IS YOUR ADVANTAGE ON THE ROAD”