Well, we have no way to tell the size difference with your own boxes, so let's just "assume" you were the one who provided the image with the given dimensions and follow them instead.
Surprisingly, that van just happens to be the same height with only a few additional millimetres. A truck with its wheels inside the one underneath it should be 3.5cm high including the black frames. Each space at the bottom of the box would be occupied by ten trucks up to the top, so my prediction would total at 510.
Surprisingly, that van just happens to be the same height with only a few additional millimetres. A truck with its wheels inside the one underneath it should be 3.5cm high including the black frames. Each space at the bottom of the box would be occupied by ten trucks up to the top, so my prediction would total at 510.