Start with the most highly evolved aerodynamic long-haul tractor Kenworth has ever engineered.  Optimize the powertrain with an efficient, fully-integrated solution from PACCAR.  Incorporate easier-to-service, longer-lived components for maximum uptime.   Add smart technology that makes driving more intuitive, safer, less fatiguing.  And include a world-class cabin reminiscent of the finest automobiles.  Welcome to the Kenworth T680 Next Gen...