Kenworth Truck Company announced that it will extend a successful rebate program with Landstar System, Inc. through 2008. The program offers a $1,000 rebate on qualifying purchases of new Kenworth sleeper trucks to independent contractors who provide Landstar with transportation capacity under exclusive lease arrangements. Kenworth Class 8 trucks eligible include the Kenworth T660, T800 and W900 models with 72-inch AeroCab(R) or 86-inch Studio AeroCab sleeper, and the Kenworth T2000 model with 75-inch AERODYNE(R) sleeper.