That speed with which he is moving, I hope I have suggested in this little image, which, again, can be turned around and read from both sides because there's text on the bottom and text on the top, one of which is upside down in this image.
Zijn snelheid heb ik hopelijk gesuggereerd in dit kleine plaatje -- dat, wederom, omgedraaid kan worden om te lezen, want er is tekst beneden en boven, waarvan eentje onderste boven.