 Complete the following phrase:  The 1979 season was filled with controversy on and off the track. During the offseason, several Indy car owners broke off from USAC, and formed Championship Auto Racing Teams, a new sanctioning body to govern the sport of open wheel Indy car racing. USAC continued to sanction their Gold Crown Championship, resulting in two parallel national championships for 1979. The controversy over the first split in Indy car racing came to its first climax at the 