New York City
New York City is one of the greatest cities in the United States. It is located on the east coast and there is plenty of things to do, like shows, restaurants and Central Park.
Ciao, America!
New York appears in "The World of Cars" book, in Luigi and Guido's story "Ciao, America!". When Luigi and Guido arrived to America, at New York City, they visited the Statue of Liberty and Central Park. They later decided to continue their trip to Luigi's uncle in Radiator Springs.
Cars 2
A city from New York, Detroit, is mentioned by J. Curby Gremlin in Cars 2. In Curby's bio, it is said that he used to work as a maitre d' of a flagship restaurant, and that he would soak in the city's best shows.