F. Porsche KG, Stuttgart, 1967.
This Porsche 911 S served as a test model for the use and processing of non-corroding steels in automotive manufacturing.
The body parts are made of cold-rolled sheet steel shaped by machine and in part by hand. The individual parts are welded. The body was not painted, but only ground and brushed. During its 7 years of operation, the car was driven 150,000km. The material passed all tests.
(text from the Deutsches Museum verkehrszentrum).