IndyCar Series is a racing simulator developed by Codemasters. It is the fifteenth game of the Official IndyCar Series games series.
The game is based the 2002 IndyCar Series season in the series. A sequel to the game, IndyCar Series 2005 was released on June 24, 2004 for PlayStation 2 and Xbox based the 2003 IndyCar Series season.
Source: Wikipedia, "IndyCar Series (video game)", available under the CC-BY-SA License.