This video shows a mechanism named snowbike. For the rendering of the video the quadruple view was used. Single positions are shown here P0, P9, P3, P12, P8, P0, P5, P19, P4, P17, P15, P13, P1, P14, P2, P16, P7, P6, P11, P10, P18, P20, P13, P2, P10, P19, P15, P1, P17, P9, P20, P4, P16, P3, P12, P11, P7, P5, P6, P14, P0, P18, P8, P8, P7, P0, P6, P16, P9, P17, P11, P10, P19, P3, P5, P13, P2, P15, P18, P1, P14, P20, P12, P4, P1, P17, P16, P19, P2, P15, P13, P11, P14, P8, P6, P10, P18, P3, P7, P9, P5, P0, P12, P4.