IndyCar, Sonoma, 2006 Link to this image full-size: https://www.racefans.net/2019/09/18/where-have-all-the-single-seater-race-car-builders-gone/racefansdotnet-20060827-155417-4/IndyCar, Sonoma, 2006Advert | Become a RaceFans supporter and go ad-freeIndyCar, Sonoma, 2006Previous ImageNext Image