With the 3rd Quarter underway, the story is increasing volatility. The shortage of used trucks combined with trends in the wholesale markets is creating larger swings in our averages than we saw earlier. Dealer sales volume is the first measure to show fluctuation. After hitting a 2011 high in April, sales dropped way off for May, only to recover about half of that lost ground for June. To read the full August 2011 Commercial Truck Guidelines, download here.