Roger Penske has been involved with IndyCar racing since 1968, when his team first fielded a stock block-powered Eagle with Mark Donohue. The organization first competed at Indianapolis in 1969, and within three years had become the team to beat, winning the race with Donohue in 1972. In 1978, Penske along with Pat Patrick, Dan Gurney, and several other team owners who had been participating in USAC events involving cars known as Champ Cars and IndyCars formed Championship Auto Racing Teams (CART).