Abstract: A toy building set comprising at least one toy building element with a body part provided with coupling for interconnecting with other toy building elements, and a vehicle with a body that is provided with coupling for interconnecting with other toy building elements. The vehicle is provided with at least one wheel that is journalled on a shaft and that extends downwards from the vehicle body for abutment on a drive face. The wheel or wheels have a rolling face with varying distances from the shaft on which it is journalled such that a waving movement of the vehicle is obtained when it travels across a plane drive face.

Abstract: The invention relates to a toy building element (1,8) for use in a toy building element system comprising a number of toy building elements with coupling studs for coupling with other toy building elements with complementary coupling sockets, the coupling studs being arranged in a regular pattern with a specific modular distance relative to each other. The toy building element is characterized in that in its free state at least some of the coupling studs of the toy building element are shifted relative to the modular distance, the mutual position of the coupling studs of the toy building element being elastically changeable at least to a mutual position corresponding to the modular distance.The invention also relates to a toy building set having such a toy building element.