Ted Field’s Interscope Racing program moved from Formula 5000 and USAC competition into the Indianapolis 500, where he backed driver Danny Ongais in an Interscope-built car. The chassis had originally been designed around a turbocharged six-cylinder Porsche engine, but a dispute with USAC officials over permitted turbo boost helped derail that plan. The car was ultimately fitted with a conventional Ford Cosworth DFX engine and entered in the 1981 Indianapolis 500. Ongais led the race before crashing violently, leaving him critically injured. The accident turned what had been an ambitious wealthy-owner racing project into a grim reminder of the physical danger of early-1980s Indy-car competition. Ongais eventually recovered and returned to the same car for one final Indianapolis start in 1982, but that attempt also ended in an accident, closing the chapter on Field’s Interscope chassis program.
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