3 ▁cars ▁initially ▁qualified ▁for ▁the ▁field ▁during ▁time ▁tri als . ▁Sam ▁H anks ▁was ▁injured ▁in ▁a ▁practice ▁crash ▁the ▁day ▁before ▁the ▁race ▁and ▁with d rew . ▁Then ▁on ▁the ▁morning ▁of ▁the ▁race , ▁George ▁Bar ring er ' s ▁car ▁was ▁destroyed ▁in ▁a ▁fire ▁that ▁swe pt ▁through ▁the ▁gar age ▁area , ▁thus ▁only ▁ 3 1 ▁cars ▁l ined ▁up ▁to ▁start ▁the ▁race . ▁ ▁In ▁ 1 9 4 7 , ▁only ▁ 3 0 ▁cars ▁qualified . ▁A ▁boy c ott ▁over ▁the ▁pur se ▁led ▁to ▁the ▁smaller ▁field . ▁ ▁In ▁ 1 9 7 9 , ▁after ▁a ▁rules ▁dispute ▁over ▁tur bo char ger ▁in lets , ▁and ▁after ▁controvers y ▁regarding ▁the ▁ref us al ▁of ▁some ▁entries ▁from ▁members ▁of ▁the ▁C ART ▁series , ▁a ▁special ▁fifth ▁day ▁of ▁qual ifying ▁was ▁added . ▁However , ▁only ▁two ▁cars ▁ran ▁sufficient ▁spe eds ▁to ▁be ▁added ▁to ▁the ▁field , ▁and ▁ 3 5 ▁cars ▁l ined ▁up ▁to ▁start ▁the ▁race . ▁He avy ▁attr ition ▁early ▁on ▁saw ▁one ▁car ▁fail ▁to ▁complete ▁a ▁lap , ▁and ▁ 7 ▁cars ▁out ▁by ▁lap ▁ 2 2 . ▁ ▁In ▁ 1 9 9 7 , ▁which ▁used ▁an ▁" all ▁ex empt ▁tour " ▁concept ▁similar ▁to ▁the ▁P GA ▁Tour ▁since ▁ 1 9 8 3 , ▁the ▁top ▁ 2 5 ▁teams ▁head ed ▁in ▁Ind y ▁Racing ▁League ▁team