@CBSNews tweets related to: Nascar, Cleaning, Daytona

DAYTONA BEACH, Fla .With the start of the Daytona 500 just hours away, NASCAR officials still have some cleaning up to do amid growing questions about fan safety.
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NASCAR has some cleaning and explaining to do ahead of the Daytona 500 - http://t.co/TjpzzKGjNp

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