'nascar' stands for "National Association for Stock Car Auto Racing", and it is a protected trademark. You registered it a couple days ago at Godaddy so you should be able to delete it and get a partial refund.
Stay away from domains based on trademarked terms; too much potential for lawsuits and problems, and yours is definitely a bad faith registration since 'nascar products' can only mean pretty much one thing... products based on the nascar brand.
Good luck, and welcome to Namepros. And never reg a TM-based domain again! We always value them at 'zero', because they aren't legal and they simply point towards trouble