A friend mails me 2 images that originate from here. On the website of the Documentatie centrum stelling van Amsterdam an intruiging story of an Oberstleutnant Rothe that pictures a trip of an inspection of the German invasion.

See the news article for the whole story.

I kindly got permision from René Ros, author of the magnificent documentation on the historic fortifications, that originally revealed the album here, to show them in low res here to tie all pictures of both vehicles together. Many Thanks!