SONOMA, Calif. (Sept. 14, 2017)  — The Verizon IndyCar® Series returns to Sonoma Raceway this weekend for its season finale at the GoPro Grand Prix of Sonoma, Sept. 15-17. Below are some points of interest regarding previous INDYCAR events in Sonoma: The GoPro Grand Prix of Sonoma has featured eight different winners since the series’ first visit…