Cadillac's Earl Bamber, Jack Aitken, and Frederik Vesti won Petit Le Mans, the IMSA season closer, in a dramatic finish at Road Atlanta.
The winning team finished just over 3 seconds ahead of Roman de Angelis, Alex Riberas, and Ross Gunn in the #23 THOR Aston Martin Valkyrie.
Mathieu Jaminet and Matt Campbell won the IMSA title by finishing third.
Aitken started the #31 Action Express Cadillac second, behind polesitter Tom Blomqvist in the #60 Meyer Shank Acura.
Autor's resume: Cadillac wins Petit Le Mans.