I have a photo, dated 21 December, 1903 showing a French car in Paris (sorry I am not allowed to publish it yet). The caption suggests it may have been taken at a race. Now this brand is virtually unknown - missing from from books, have not been mentioned in magazines etc.
On 21 December, 1903 the Salon de l'Automobile was in full swing in Paris. The Belgian king visited the show. Can you imagine that a little sporting event may have been held on that day separate from the show? Where can I check it? Looked on Gallica and CNAM, so far no luck.