There are no special rules for vehicles in assault combat. As a result vehicles are quite vulnerable. As they don’t have an assault ability they can’t initiate assaults and defend with a hef of 1. They take hits normally - first hit shakes, second eliminates.
Playing first game with vehicles tonight.
So a fast move infantry squad can burst into the open and blow up a defenseless tank. Nice. Wouldn't be that big of a deal in a "normal" game but in a game where you need to have a fire card and the hand size is 4 having a tank is a pretty big liability.