 He drove in the USAC Championship Car series, racing in the 1965-1975 seasons with 62 starts, including the Indianapolis 500 in 1968-1973 and 1975.He finished in the top ten 21 times, with his best finish in 4th position on 7 occasions.Based on information in "Donald Davidson's Indianapolis 500 Mile Race Annual 1974," Sessions was not given a chance to qualify for the 1974 Indy 500.