Championship contenders preview Sonoma race

By IMS Productions | Published: Aug 22, 2014

Will Power, Helio Castroneves and Simon Pagenaud talk about the 85-lap GoPro Grand Prix of Sonoma -- the penultimate race of the Verizon IndyCar Series season. Watch the race live at 4 p.m. (ET) Aug. 24 on NBCSN.