GoPro Grand Prix of Sonoma – Thursday testing – afternoon session – 7:10pm

By Steve Wittich First blood in the chase for the 2017 Astor Cup went to defending series champion Simon Pagenaud, who’s quickest lap of the six hour test day clocked in at 76.6511 seconds. That circuit was just over one-tenth of a second ahead of Team Penske teammate Helio Castroneves, and four-tenths ahead of  another…

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