<prompt> Qedela lo musho olandelayo: USachs nomshayeli wezimoto ezemidlalo uDave MacDonald, owayengumshayeli omusha emjahweni wama- 500, babulawa engozini evuthayo eyayihlanganisa izimoto eziyisikhombisa emzuliswaneni wesibili womjaho  <response>: Ngo-1964 i-Indianapolis 500. UMacDonald wayehamba ngemoto eyayiphethwe futhi yaklanywa uMickey Thompson, i-83 Sears-Allstate Special. UThompson wayecele izikhulu ze-USAC ukuthi zivakashele isitolo sakhe eCalifornia ukuyohlola imoto ngenkathi isakhiwa ukuze angatshali imali emotweni uma kunethuba lokuthi izokhanselwa eSpeedway. I-USAC yamukela isicelo futhi yadlulisa imoto nephakethe layo lemiphumela yasemhlabeni. Ngesikhathi imoto ifika eSpideway ngoMeyi, i-USAC yayisishintshe umqondo futhi yahluleka. Esebenza ezindaweni ezicinene zendawo yegaraji, uThompson nethimba lakhe empeleni bakha kabusha imoto ukuze ihlangabezane nemininingwane emisha ye-USAC. Lezi zinguquko, ukususwa kwamafenders, ukushintshela kumathayi amakhulu nokwandisa ukuphakama kusuka ku-intshi ezimbili kuya kwezine, kwenza izimoto zingazinzi. UGraham Hill wavivinya imoto ngaphambi kwe-Indy kodwa wenqaba ukuyishayela ngo-1963. UMasten Gregory washayeka ekuqaleni kwale nyanga ngenxa yokuphakanyiswa komoya. Ngemva kokuthi uMacDonald eseqeqeshiwe futhi ngaphambi komncintiswano, iWorld Grand Prix Formula One Champion uJim Clark, owayemazi uMacDonald futhi ehlonipha ikhono lakhe, walandela umCalifornia izikhathi eziningana. Ngemva kokungena emotweni, uClark wanxusa uMacDonald ngokuqinile ukuba aphume emotweni. Phuma, kusho uClark. Vele uphume futhi uhambe. Kodwa uMacDonald wazizwa ebophekile ukuba ahloniphe isivumelwano sakhe noThompson. Abanye abashayeli balandela iseluleko sikaGregory futhi bagwema izimoto zikaThompson. Ngaphambi komjaho, uGregory wasondela kumshayeli weFormula One uJack Brabham, owayeseceleni kukaMacDonald ku-grid, futhi wanxusa uBrabham ukuthi avumele i-rookie indawo eningi. UBrabham wathi iseluleko sikaGregory sasindisa ukuphila kwakhe. 