Volvo Trucks North America, Inc., today announced that freight transportation services provider U.S. Xpress Enterprises, Inc., has ordered 500 of Volvo's VN highway tractors. Delivery of the VNL780 models will begin in the second quarter of 2003, and is expected to extend over a twelve-month period. One hundred of the vehicles will be equipped with Volvo VE D12 engines; the remainder will be equipped with Cummins ISX engines.