Solved: Wendax 1386 - Willi Schuhnagel

[Wendax]

Well done, signora!   

It is Willi Schuhnagel, his first name sometimes spelt Willy.

The last of the pictures below shows him together with Alfred Neubauer, the famous racing director of Mercedes-Benz.

[Wendax]

Interestingly, the supposedly last racing car of Willi Schuhnagel looks awfully much like the Silver Arrow streamliner of Kurt Ahrens jr.: http://www.autopuzzles.com/forum/index.php?topic=16345