Parsons, Humphrey Form HP Racing
PRISM Motorsports fielded the No. 66 Toyota in 2009 and 2010. Source: http://www.inracingnews.com/nascar-news/nascar/parsons-humphrey-form-hp-racing/
Jean Marc Gounon Emmanuel de Graffenried Lucas di Grassi Cecil Green Keith Greene Masten Gregory Cliff Griffith Georges Grignard