That picture was taken by Walter as well, see the full album of all the pics he made when he was @ Remmele
http://www.keversite.nl/fotoalbum/my_photos.php?id=3653
So it's a car that was being worked on @ Remmele at the moment in time, don't know if it's Remmele's own car or a customers but if you really want to know more I'd suggest calling Remmele.