If these are race pics, they were taken very early on in the race, considering the tragic Ickx/Taylor accident. I have Ickx as having completed just one lap, and that was with damage from the crash, so the image of him at that very point of the track could be interesting.
Racingsportscars has these results for the Rheinland-Pfalz Preis, including the non-starters:
http://www.racingsportscars.com/results ... 08-07.html
I believe we are dealing with one of these:
A pic of a Glas 1300 GT:142 Gerhard Bodmer Glas 1300 GT
143 Joachim Laermann Glas 1300 GT
https://commons.wikimedia.org/wiki/File ... e_Rock.jpg
Here, it says that the GT/TC-event was the final one of the race weekend.
http://www.pro-steilstrecke.de/gpdeutsc ... d_1966.php
So, obviously, in order for the wreck of either Bodmer or Laermann to be there during the GP (and I think it's Bodmer and the #142), the car must necessarily have had an incident sometime during practice.
So, summing up, that's what I'm suggesting for this ID:
Gerhard Bodmer's wreck in practice for the 1966 Rheinland-Pfalz Preis. A good bet.