Tanks are military vehicles that appear at certain races of the Festival of MotorStorm: Apocalypse. They belong to the private security contractor DuskLite. At certain points, the hulks of destroyed tanks will become obstacles to the players. They are most visible on certain versions of Good Herb, where they can be found shooting at the Crazies.
The DuskLite tanks borrow design elements from the British Challenger 1 Tank, Israeli Merkava battle tank, or the American M1 Abrams. Of course, there is a possibility that the tanks aren't meant to resemble any specific tank.