<prompt> Pedzisa mutsara unotevera: Pamberi pa1990 Morales Motorsports yakavharwa uye Patrick Racing akatora chirongwa cheAlfa Romeo naGuerrero achityaira No. 20 Miller Genuine Draft March 90CA-Alfa Romeo Indy V8. Guerrero akakwanisa kupinda mumakwikwi  <response>: Indianapolis 500, kutanga 28th uye kupedza 23rd nemhaka yokukuvara kwesuspension. Chikwata chakazochinja kushandisa a hrefLola20Racing20Cars Lola T9000a kutanga paMarlboro 500 kuMichigan International Speedway. Munhangemutange Guerrero akapedza ari panzvimbo yechishanu. Pakupera kwemwaka Guerrero akapedza 16th mumapoinzi ane 24 mapoinzi. 