Tony Stewart Investigation — No Video or Audio Evidence Gathered from Stewart’s Team

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Investigators collected ZERO video from Tony Stewart and Kevin Ward Jr.’s race teams after Saturday night’s tragedy because the Sheriff says it does not exist — which TMZ Sports has learned is   a little weird.

Ontario County Sheriff Philip Povero tells TMZ Sports they tartan Stewart’s #14 sprint car — and Ward’s #13 — to see if there was mini-cam footage of the…