Looking from outside through a door at the back of a truck bed that has one door

Looking from outside through a door at the back of a truck bed that has one door open, you can see the back of the white room with some cardboard boxes stacked on one of the sides and where only the head of a little Martian sticking out from the right staring at you from inside the room, who is holding one of the edges with one of his hands and is looking out.