As usually, there will be different classes of weapons, including melee weapons. Cars allow to move three times faster than walking, and may carry additional equipment. Vehicles may be armed and modified. I.e. it is able to move around the battlefield and fire on enemies. The passengers are able to shoot through windows.
Vehicle provides additional armor, but it is vulnerable to heavy weapons.
You can mine its way, there is new additional skill for this purpose. You can kill the driver by well-aimed shot through window. Vehicle may be driven over the enemy to kill him. Other valuable feature of Fallout Tactics is multiplayer. There five multiplayer modes planned, including teamplay, deathmatch and cooperative.