"Ridge Racer is a series of arcade racing games developed and published by Namco for both the arcade and various consoles.
Ridge Racer uses tracks which take place in the fictional city of Ridge City. Ridge City contains varied landscapes such as cities, beaches, woods, and mountains. Ridge City is located in Ridge State, whose location is unknown. The actual scope of Ridge city has changed over the series, adding new tracks all the time. However, The City still retains the original course from Ridge Racer and Ridge Racer 2. The landscape of Ridge city is diverse, containing tracks that run through cities, beaches, wooded areas, and mountains. In some of the earlier games, all of the tracks share the same starting line and finish line, but open or close off different parts of the track to yield a different course. The soundtrack predominantly features fairly up-beat techno music composed by Namco in-house artists. Most of the games use Reiko Nagase as a mascot, and many feature Full Motion Video sequences by Kei Yoshimizu from Keica inc."
Source: Wikipedia, "Ridge_Racer_(series)", available under the CC-BY-SA License.