By 1975 Barnard had been hired by Parnelli Jones to work with Maurice Philippe designing the team's Formula One racer (the Parnelli VPJ4) which campaigned from 1974 to 1976. The cars best finish was 4th by Mario Andretti at the 1975 Swedish Grand Prix. After Philippe left Vel's Parnelli Jones Racing, Barnard modified the design for the Indycar circuit. Further Indycar designs followed and in 1980 the Barnard-designed Chaparral 2K chassis took Johnny Rutherford to the prestigious Indianapolis 500 and the CART drivers title.