osg::AnimationPath *animationFirstCar() {
    //anim path is list of position with time value
    osg::AnimationPath *pPath = new osg::AnimationPath();

    float localTime = 0.0f;

    pPath->insert(localTime, osg::AnimationPath::ControlPoint(g_Roads[0]->animationPoint(0, g_pRoot)));

    for (int i = 16; i <= 18; i++) {
        pPath->insert(localTime += gc_fTimeUnit, osg::AnimationPath::ControlPoint(g_Roads[i]->animationPoint(0, g_pRoot), osg::Quat(osg::PI_2 * -3, osg::Z_AXIS)));
    }

    pPath->insert(localTime += gc_fTimeUnit, osg::AnimationPath::ControlPoint(g_Roads[30]->animationPoint(0, g_pRoot)));
}