Nyorai kupfuurira kweiyi ndima - Magadzirirwo ezvo Indy 500 ari kunyorwa neIndyCar. Mitemo yacho inowanzova yakafanana nemimwe mijaho yose yeIndyCar. Munguva yakapfuura, kunyanya munguva iyo USAC yakatendera Indy 500 (asi CART yakatendera mimwe mijaho yemotokari yeIndy), mitemo paIndy yaisiyana zvishoma pane dzimwe nguva. Mugumisiro wacho, somuenzaniso, waizova wokuti chassis chaiyo kana kuti gadziriro yeinjini inobvumirwa nomutemo paIndy, asi kwete pamitambo inobvumirwa neCART. Izvi zvaive zvakajairika muma1980 uye kutanga kwema1990, apo "stock-block" injini (kureva iyo V-6 Buick) dzakapihwa huwandu hwakawedzerwa hwe turbocharger kukurudzira neUSAC kuIndy, zvichienzaniswa neyakagadzirwa-yakagadzirwa V-8 quad-cam injini. Nepo "stock block" injini dzaive dzepamutemo mumakwikwi eCART, ivo havana kupihwa mukana wekuwedzera, izvo zvakanyatsoita kuti vasave nemakwikwi, uye vakarambidza kushandiswa kwavo nezvikwata. Chiratidzo chinonyanya kuzivikanwa chekusaenzana kwemitemo yeUSAC yaive injini yeMercedes-Benz 500I yakavakwa neIlmor yakaiswa naRoger Penske muna 1994
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