OK.......... what is not clear in that link is that it is a Bundesarchive photo taken in 1941.
If you go to this link
http://www.histomil.com/viewtopic.ph...3918&start=110
and scroll down the page you will find a larger version of this photo with the Bundesarchive info ( and once you start with this archive you'll be on line for hours... ) so it may be that this AC had been around for awhile ?
Don