Fire Island
From Tardis Wiki, the free Doctor Who reference
Fire Island was an island on New Earth. In 5,000,000,041, Thomas and Valerie Brannigan left Battery Park in New New York for the Motorway, thinking they could take a chance with the "jobs going" in the laundries on Fire Island. By 5,000,000,053, they had just passed Pharmacytown. (TV: Gridlock)
Behind the scenes
In the real world, Fire Island is the name of an island in Suffolk County in New York state, outside the real-world New York City on Earth. The dialogue in Gridlock does not specify the location of the Fire Island on New Earth in relation to New New York.