Peter Prunty Announces the Racers
The center of attention at the start-finish line was announcer Peter Prunty, who wielded an imposing megaphone more than a yard long. He was the public address system for every Long Island Vanderbilt Cup Race, relaying messages phoned in from throughout the course.

I should have gone with my reasoning that it couldn’t have been the 1906 car since the picture showed it in front of a garage…