Pirelli World Challenge, Formula Car Challenge Round Out Verizon IndyCar© Championship Weekend

    SONOMA, Calif. (Aug. 19, 2015) – Sonoma Raceway is set to host an action-packed weekend of racing, as two series join the Verizon IndyCar® Series Championship Weekend at the GoPro Grand Prix of Sonoma, Aug. 28-30. The Pirelli World Challenge returns to Sonoma Raceway for the fifth consecutive year featuring doubleheader racing in…

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