3D models of cities?

I’m not a good artist and I need 3D models of cities for driving games that I want to create. Any suggestions for 3D models of cities for games?

Blender has a city generator plug in and if you do a search i know that someone is working on a city generator for Unity as well just can’t remember who.
K

I visited some websites that offer 3D models such as TurboSquid, 3D Warehouse, 3D CAD Browser, etc, but I can’t find accurate 3D models of New York City. I can’t find 3D models of Staten Island, either. I saw 3D models of cities from “Grand Thief Auto” games. I tried to use SketchUp to create 3D model of Staten Island but trees block view of streets. I searched this forum for the city generator for Unity but I can’t find it.