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Cars are Andy Ruiz Jr.'s favorite hobby. The Mexican-American boxer is known for his love of automobiles, particularly sports cars and luxury vehicles. He has an extensive collection of cars, including a Lamborghini Aventador, a Ferrari 488 GTB, and a Rolls-Royce Cullinan. Ruiz Jr. often shares photos and videos of his cars on social media, and he has even been featured in car magazines.