According to The Motor Way the Darracq’s frame was constructed of “sheet iron” and used Tuffault-Hartford shock absorbers. This supported not only the engine but a 30 gallon barrel style gas tank and an 8 gallon water tank.
During the 1906 Vanderbilt Cup Race, Wagner's Darracq led all ten laps, winning the race with an average of 62.7 mph.The honeycomb radiator contributed heavily to its odd appearance as described in the newspaper accounts. Unlike its 1905 predecessor’s square box style radiator, the 1906 version was more of a triangle with two sides jutting out from the uncovered engine like the blade of an ax.
