It's the first win by a privateer team in the Grand Touring Prototype category.
On the streets of Southern California, Porsche Penske Motorsport will try to remain unbeaten this season.
Porsche Penske Motorsport will be seeking its third consecutive GTP victory at the track in Monterey, California.
Rahal BMWS among those trying to stop Porsche Penske's unbeaten run this season.