 Designed by Image Space Incorporated (ISI) using their rFactor computer racing simulator software, the program allows users to configure and race the IS F. Three race courses are offered, namely Orchard Lake (an oval and road course), Toban Raceway (a road course), and Essington Park, Lienz (a mountain road and rally course).The software incorporates artificial intelligence modeling of competing vehicles, and its physics engine simulates actual driving conditions.The race-prepped Lexus IS F which competed at the 24 Hours Nürburgring race in October 2009 carried a prototype of a "GPS-track day" unit co-developed by the "Gran Turismo" game designers and Lexus supplier Denso corporation.