WheelBase is Vehicles.Wheels.Base:
    .doc: """
    Simple wheel model with a cylinder geometry.
    """
    rim:
        width: 0.4
        radius: 0.4
        geometry is Physics3D.Geometries.Cylinder:
            height: 0.2
            radius: 0.36
            local_transform.rotation: Math.Quat.from_euler_angles( Math.PI * 0.5, 0, 0.0) 
