 Nyorera kupfuurira kweiyi ndima - Kutanga kwemwaka wa2003 kwakaona Hornish achinetseka mukuenzanisa nemakore ake maviri apfuura paPanther. MuIndianapolis 500, akapedza ari pachinzvimbo chegumi nesere; munhangemutange, akasiya basa neinjini yakaputika mushure mekupedza 195 yemakumbo mazana maviri. Hornish akapedza nhangemutange ari pachinzvimbo chechi15, achirova Buddy Rice pachinzvimbo chechi12 mumapoinzi. Munhangemutange yakatevera paPikes Peak, akatanga ari pachinzvimbo chegumi nemana uye akapedza ari wechishanu kutanga kwake kutungamira-kutenderera kwekupedzisira kwemwaka. Panenge panguva iyi, Panther Racing nemamwe makirabhu akati wandei vachishandisa injini yeChevrolet yakavakwa neGeneral Motors kambani yemubereki yeChevrolet vakachinjira kune injini nyowani naCosworth iyo yaive nemucherechedzo seinjini yeChevrolet. Mushure mekushandurwa kwezvibereko zveHornish zvakatanga kuvandudza; akatanga wechina uye akapedza wechipiri, mushure mekutungamira kwemazana maviri nemakumi maviri nematanhatu, kuMichigan International Speedway. Makwikwi maviri gare gare, paKentucky Speedway, akakodzera nzvimbo yepamusoro uye akatungamira 181 yemakumbo mazana maviri kuti akunde. Hornish ipapo akakunda mamwe makwikwi maviri akatevedzana, kuChicagoland uye kuCalifornia Speedway. Akakunda nhangemutange yekare ne 0.01 yechipiri pamusoro peScott Dixon naBryan Herta, iyo yakanyanya kusvika pakati pevatatu vekupedzisira munhoroondo yezvinyorwa. Achipinda mumakwikwi ekupedzisa mwaka weChevy 500 kuTexas Motor Speedway, Hornish aive nemasvomhu akakodzera kuhwina mukwikwidzi; zvisinei, mota yake yaive nedambudziko rekupfapfaidza mushure memakumi mapfumbamwe nemapfumbamwe nemakumi mapfumbamwe neshanu. Akapedza ari 17th, uye akanga ari wechishanu mumakwikwi ekupedzisira nemapoinzi 461. 