When people think of work trucks and heavy duty trucks, there are only two brands that immediately come to mind. The ones that people use in an expression of speech that's synonymous with actually being hit by one and Peterbilt trucks. Over time these trucks do their jobs and work hard. When the owners no longer need them or do not want them, they sell them. But the one thing that continues to stand out with most heavy duty trucks is that used Peterbilt trucks for sale are still every bit as good, strong and functional as brand new ones.