Zagat Survey (pronounce za-GAT) was established by Tim and Nina Zagat in 1979 as a way to collect and correlate the ratings of restaurants by diners. For their first guide, covering New York City, the Zagats surveyed their friends. As of 2005, the Zagat Survey included 70 cities, with reviews based on the input of 250,000 individuals reporting over the years. In addition to restaurants, Zagat guides rate hotels, nightlife and shopping, zoos, music, movies, theater, golf, and airlines. The guides are sold in book form, as software for personal digital assistants and mobile phones, and by paid subscription on the Web. Car manufacturer Honda included Zagat information in the GPS-based navigation systems in some of their models available in the United States, including the Acura MDX, the Acura TSX, the Honda Accord, the Honda Civic, the Honda Pilot, and the Honda Odyssey.