Joie Chitwood, president of the Daytona International Speedway, has said that Sunday's main race will go ahead despite the recent incident.
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DPRK Today, one of the state's mouthpieces, described billionaire Trump as a "wise politician" and the right choice for US voters.
Outbreaks of rain or drizzle will affect central and southern England and Wales through the day and these could be heavy at times.
Severe flooding has forced more than 1,000 people from their homes in southeast Texas, and at least eight people have died across the state.