Sourced production or model lifecycle range used by the main catalog timeline.
Darracq125 HP Grand Prix / Vanderbilt Racer
Common factory racing design used in Grand Prix, Ardennes and Vanderbilt configurations. Wagner won the 1906 Vanderbilt Cup; Hanriot placed second in the Ardennes, and Caillois and Rigal finished fifth and sixth in the 1907 French GP. Vanderbilt reports called it 100–110 HP, but the period Grand Prix specification gives 125 HP. The short-wheelbase American setup appears to reuse the same type and is not counted as a second model.
Dates with their meaning intact
This record contains useful sourced evidence, but it does not yet meet the reference-ready standard. Still needed: attributed imagery. Fields we cannot source stay empty rather than guessed.
At least three works chassis; three cars raced in both 1906 and 1907, but evidence does not prove six separately built cars.