In this month's edition of Commercial Truck Guidelines, you'll find that late-model sleeper tractors finally level after a record-setting retail high. Demand remains extremely strong for low-mileage sleeper tractors. The spread between low and average mileage iron continues to widen because demand for low-mileage units still greatly exceeds supply. However, as discussed in a previous blog post, buyers still place a premium on traditionally-styled sleeper tractors even in this age when fuel economy is of critical importance. To read the full March edition of Commercial Truck Guidelines, download them here