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NASCAR America: Dale Jr.'s cautious approach could impact how racers treat concussions

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While most want to see Dale Earnhardt Jr. get back to racing, his decision to step away for the rest of the season due to concussions could impact how other racers deal with the same issue.

While most want to see Dale Earnhardt Jr. get back to racing, his decision to step away for the rest of the season due to concussions could impact how other racers deal with the same issue.