The class of the field during the 1989 season, the Penske PC-18 won Indy and the championship with Emerson Fittipaldi for Patrick Racing (operated by Chip Ganassi), ahead of Rick Mears in the yellow Pennzoil car of Penske.
The PC18 was powered that year by a Chevrolet 265A V8t by both teams. The car was much less competitive in 1990, but still took a handful of points finishes, and a first podium finish for Chip Ganassi Racing.
First seen in sim racing with Indy 500 (1989). The manual for that title states that their Penske chassis is a Penske-Chevrolet, but instead of replacing existing teams on behalf of the player the software creates a fictional Penske team that replaces the March-Cosworth of Rich Vogler, who started 33rd and finished 8th in 1989.