Expandable cargo box arrangement for a vehicle

An arrangement for expanding a cargo box of a pick-up truck vehicle, the arrangement comprising:

• a wall that defines a cabin space on an internal side and a cargo box end on an external side, the wall arranged to move from a first position to a second position;
• a latch mechanism attached to the wall and arranged to maintain the wall in the first position;
• a release mechanism coupled to the latch mechanism and arranged to selectively release the wall from the first position such that the wall can move into the cabin and towards a front of the vehicle to a second position and extend a length of the cargo box;
• a cargo box having a load floor member attached to the vehicle and a pair of side panel members positioned perpendicular to the load floor member on a driver side and a passenger side of the cargo box;
• and
• a pair of side extension panels and a load floor extension panel attached to the wall and arranged to be translateable relative to the cargo box side panel members and the load floor member from a non-deployed to a deployed position such that when the wall is moved from the first position to the second position, the side and load floor extension panels translate to extend the cargo box;
• wherein the side extension panels are positioned parallel to the cargo box side panel members and the load floor extension panel is positioned parallel to the cargo box load floor member.