The Versatrak all-wheel-drive system on the Relay 3 AWD model is lightweight, quiet and efficient. It works full time. The driver need do nothing. If one or both front wheels lose grip, the system goes into action, with no buttons to push or levers to throw. Whenever the front wheels lose grip, the system transfers power to the rear tires. But it also apportions power from side to side between the rear wheels, an ability not found on most all-wheel-drive systems. Next Page