Kammala jumla mai zuwa: A cikin 2008, Dominguez ya ba da sanarwar cewa zai shiga ragowar lokacin IndyCar Series na 2008 tare da Pacific Coast Motorsports, bayan ya zama na uku a tseren karshe na Champ Car a Long Beach. An fitar da shi daga filin wasa a
2008 Indianapolis 500 kuma ya fara farawa na farko a cikin jerin a tseren na gaba a Milwaukee Mile. Tun lokacin da ya kammala na 21 a Texas Motor Speedway a watan Yuni, tawagar Dominguez ta tsallake abubuwan da suka biyo baya don sake nazarin shirin su don zama mafi gasa lokacin da suka dawo. Sun dawo kan hanya hanya kawai kuma sun shiga cikin Watkins Glen, Mid-Ohio, Edmonton, da Infineon tsere don rufe kakar. Mafi kyawunsa na kakar wasa ya zo a Watkins Glen a matsayi na 13. Ya gama na 27 a maki.