Classic & Sports Car recently featured an article by Richard Heseltine titled “Why this is no ordinary Citroën Traction Avant”.
It’s a bit of read through to the part where he actually describes how this Traction 15/6 came to be and what was actually done to it to make such a claim, but scrolling toward the end reveals some juicy details.
Read the full article here: https://www.classicandsportscar.com/features/why-no-ordinary-citroen-traction-avant