Kammala jumla mai zuwa: A cewar wata sanarwa ta Janairu 2008 Associated Press, an sanar da cewa Priestley zai zama mai haɗin gwiwa a cikin sabuwar ƙungiyar IndyCar Series. An san sabuwar ƙungiyar a matsayin Rubicon Race Team wanda mai haɗin gwiwa Jim Freudenberg ke jagoranta. Da farko sun shiga mota a cikin
2008 Indianapolis 500. An shirya motar ta Indianapolis Sam Schmidt Motorsports kuma direban shi ne Max Papis.