This is the Bugatti T51A, chassis 51134, driven by Ernst-Dietrich Troeltsch
Yes, that's the car. It has been modified and looks far more modern.
However, that's not the driver identified in the caption of my puzzle image. Because this is the Pros I suppose I must ask you to complete the answers in full - LOCKED for Wendax. I want to know the date and the event, although I confess I have no firm information about the driver, but according to my records, it's not Troeltsch.