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
Indianapolis 500, kutanga 28th uye kupedza 23rd nemhaka yokukuvara kwesuspension. Chikwata chakazochinja kushandisa &lt;a href="Lola%20Racing%20Cars"&gt; Lola T90/00&lt;/a&gt; kutanga paMarlboro 500 kuMichigan International Speedway. Munhangemutange Guerrero akapedza ari panzvimbo yechishanu. Pakupera kwemwaka Guerrero akapedza 16th mumapoinzi ane 24 mapoinzi.