Yes, that was my first thought too.
It looks more like they have made an attempt to reduce the friction, if it were to come close enough.
But I can't find any part coming close enough, to work like that. Not even this contraption comes close. Used in at least 9 different models, together with this windscreen.
![[Image: 6058113.jpg]](http://cache.lego.com/media/bricks/5/2/6058113.jpg)
It looks more like they have made an attempt to reduce the friction, if it were to come close enough.
But I can't find any part coming close enough, to work like that. Not even this contraption comes close. Used in at least 9 different models, together with this windscreen.