Car and Driver magazine published an article on April 1 claiming that the White House ordered Chrysler and GM to end all participation in NASCAR races. If they quit participating, the article said that they would be eligible to get additional federal loans. Luckily for NASCAR fans, this was just an April Fool's joke.
In fact Obama is something of a NASCAR fan himself. In July 2008 he considered a proposal by BAM to sponsor a car in the Aug 3, 2008 Pocono competition. It was considered in conjunction with a get out to vote campaign.