This crusher with be crusher with a room, the floor will completely be a super rough, sanding surface. Drive in your vehicle onto the floor.
When you activate the crusher, the floor will start moving like a conveyor, the car will move with the floor until it hits the wall, then, the super rough surface will grind down the car.
If you turn off the crusher while the crusher is doing its thing then your car will be left something similar to this:
The crusher will probably be a row 2 crusher replacing one of the floor 1 rooms.