A first container is provided including a first base, a first wall, a second wall, a third wall, and a fourth wall. The first, second, third, and fourth walls, can each be placed in an erect state, substantially perpendicular to the first base or in a collapsed state substantially parallel to the first base. The first and second walls, which oppose each other, can also be placed in ramp states to allow a vehicle or cargo to be rolled over the first or second walls and onto the first base. Inverted J-shaped slots allow the first wall or the second wall to pivot about multiple pivot points with respect to the base.