The moving part is not a dildo, but the cart moving forward-backward by rails.
See Locomotion page.
Dildo is attached to the moving cart by levers, rolling on waves surface.
See Locomotion Washing Bord version page.
See Riding Bicycle page.
Electric motor Fucking Machine is installed on bicycle frame, producing fucking motions of dildo through the saddle. Bicycle riding is independent of fucking motions.
See Bicycle-FM page.