From post-war Germany:
Hermann Holbein - began to produce the Champion minicar
Egon Brütsch - tried to set up productions of micromobiles
Alex von Falkenhausen - built some prototypes of luxury coupes
Ernst Loof - the man behind Veritas cars. One can argue whether he was actually a proper racing CAR driver (he had been successful on motorcycles), but he was on the grid for the 1953 German GP
and then obviously a lot of the automobile pioneers:
Emile Levassor (Panhard & Levassor)
Count de Dion (de Dion-Bouton)
Emile Roger (Roger-Benz)
Leon Serpollet (Serpollet steamers)
Amedee Bollee
Charles Jeantaud
Fernand Charron (CGV)
Leonce Girardot (CGV)
Emile Voigt (CGV)
Emile Delahaye
Georges Richard (Richard-Brasiier)
Henri Brasier (Richard Brasier)
J. Corre (Corre - La Licorne)
Albert Clement (Clement-Bayard)
Louis Renault
Marcel Renault
Baron de Turkheim (de Dietrich)
Brillie (Gobron-Brilie)
Leon Demeester
Alexander Winton
Walter Christie
Charles Rolls
Herbert Austin
Fritz Opel
Vincenzo Lancia
Louis Chevrolet
Gaston Chevrolet
Georges Sizaire (Sizaire-Naudin)
Lousi Naudin (Sizaire-Naudin)
and probably a lot more (the French will hopefully forgive me for leaving out all the accents...)
And does Tony Crook count?