<prompt> Pedzisa mutsara unotevera: Groff akaedza kuita CART Champ Car yake yokutanga mu  <response>: 1990 Indianapolis 500 nokuda kweEuromotorsport asi akakundikana kukwanisa. Akaita kutanga kwake mavhiki matatu gare gare paDetroit Grand Prix nechikwata chimwe chete uye akapedza mwaka navo. Mumatanho gumi nemaviri, akawana nzvimbo yechinomwe paNazareta uye akawana nzvimbo yechigumi nenomwe. 