The winners of the Vanderbilt Cup Races of Long Island were typically not the fastest cars but the ones that were the most durable with the fewest tire problems. The car and tire manufacturers assisted the drivers by setting up repair and tire stations throughout the courses. These were the "pits" of modern day race lexicon, decidedly less structured than found in racing today.
As posted on VanderbiltCupRaces.com, for the most part, these stations were clustered around the turns, where the cars were more vulnerable to mechanical and tire failure.
Enjoy,
Howard Kroplick