 Complete the following phrase:  Parnelli secured the services of ex-Team Lotus designer Maurice Philippe and driver Mario Andretti for USAC racing in the early 1970s, and in 1974 decided to move into Formula One racing, with ficial support from tire manufacturer Firestone. After a brief foray into Formula One at the end of the season, Vels Parnelli Jones mounted a full campaign in . Their Parnelli VPJ4 car owed much to Philippes Lotus 72 design. It appeared for the North American races at the end of the 1974 season and was gradually developed through 1975. However, Firestones decision to quit racing at the end of 1974 meant that a major partner was lost. Jones was unable to find a replacement title sponsor and despite improvements made to the car the team folded only three races into the season. Andretti only learned of the Formula One teams future from journalist Chris Economaki, as he sat in the car on the grid for the 