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CONCORD, N.C. — NASCAR driver Kyle Busch died Thursday after becoming unresponsive while testing in a Chevrolet racing simulator on Wednesday and being transported to a Charlotte-area hospital, his family and news reports said. He was 41, a two-time Cup Series champion and one of the winningest drivers in NASCAR history. CONCORD-area reports said Busch had raced and tested this week; his family requested privacy while officials have not released an official cause. He had 234 career wins across NASCAR national series, including 63 Cup victories, and was scheduled to run the Coca-Cola 600 three days after his hospitalization; NASCAR and his team will announce next steps.

Prepared by Emily Rhodes and reviewed by editorial team.