Completed the following sentence: Ruby raced in the USAC Championship Car series in the 1958<unk>1977 seasons, with 177 career starts, including the Indianapolis 500 from 1960<unk>1977. <unk> <unk> <unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
1964 <unk> <unk> 1966,<unk>he led the Indy 500 for 68 laps.<unk>