Complex sentence: In 1958 Polak moved to Hermosa Beach, California and through contact with Dr. Ferry Porsche, whom he had known in Europe through motorsport contacts, opened the first exclusive Porsche dealership in the United States in 1959.
Split into simpler sentences: In 1958 Polak moved to Hermosa Beach, California and through contact with Dr. Ferry Porsche, whom he had known in Europe through motorsport contacts. Polak opened the first Porsche exclusive dealership in the United States in 1959.