Assembly-toy-chassis building element

An assembly-toy building element for a toy vehicle in combination with an intermediate building element, the assembly-toy building element comprising:

• a chassis element having a top side, two side walls, two end walls and compatible coupling components disposed at opposite ends of the chassis element for enabling the chassis element to be rotatably coupled to another said chassis element;
• wherein at least one end wall of the chassis element is disposed and configured for connection to the intermediate building element that is adapted, either alone or in combination with at least one other intermediate building element, to effect a non-rotatable end-to-end connection with another said chassis element;
• wherein the at least one end wall of the chassis element is configured to be non-rotatably connected to the at least one end wall of the another said chassis element by a said intermediate building element that is adapted to be non-rotatably connected to the at least one end wall of said chassis element when said intermediate building element is disposed between the chassis element and said another chassis element with the at least one end wall of the chassis element abutting an end wall of said intermediate building element;
• and
• wherein said intermediate building element is configured to cover coupled coupling components of the chassis element and the another chassis element when the intermediate element is non-rotatably connected to the at least one end wall of each chassis element.