The only source I had was a 10 year old low-res. scan from an old car magazine (probably "Auto Motor und Sport"), the puzzle pic.
At first I thought it might be a Fichtel & Sachs project, but after some search I´ve found the real F.Sachs & Sohn in Hamburg.
I´ve contacted them to ask for more details.
They´ve e-mailed me that it´s been a project to celebrate their companies125th birthday and told me about the gimmicks like radar and atomic engine, too.
More pics are very welcome.
