Welcome to Potamkin Cadillac, Chevrolet, GMC & Buick Long Island, your premier New York Chevrolet, New York Cadillac, New York GMC & New York Buick dealers. We are located in the heart of Manhattan. Being located in Manhattan allows us to also operate as your Long Island Cadillac, Long Island Chevrolet, Buick, GMC and Buick dealer. We are conveniently located at 706 11th Ave, New York, NY 10019. Come to Potamkin when you need a new car dealer in New York City or Long Island or a used car dealer in New York City.