Replays showed that van Gisbergen had caught the #96 Wet & Forget ZB Commodore as they arrived at Skyline, then got an overlap as they dropped through The Esses.
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At the right-hander on the way out of the complex, Car #97 made contact with the right-hand side of the Brad Jones Racing entry towards its rear corner, causing it to rotate.
“I just don't understand it,” Brad Jones told Speedcafe.com.
“He definitely wouldn't have been on a fast lap because he was trying to go around the outside of someone and the other car can't just disappear. I don't know what he was thinking.
“He's already fourth, he's not going to go faster,” added Jones.
“I just don't understand.”