Sonsio Grand Prix warm-up and other notes
By Steve Wittich When the 30-minute warm-up got the green flag at 11 am, the ambient temperature was 65, and the track temperature was 94.5F With a question mark hanging over the choice between the Primary (black) Firestone Firehawk race tires and the Alternate (red) Firestone Firehawk race tires, the 27 cars wasted no time