Spam? I think so. Even though it appears at first glance to be legit. What tipped me off? the SHEER NUMBER of classes and "400 entries per day," and it's 'run what you brung' style of advertising. Tell me what you think. I hope I'm wrong, this sounds kind of cool.
I am an idiot, I didn't do my due dilligence. http://www.caranddriver.com/article.asp?section_id=4&article_id=9202&page_number=1 Upon further review, It looks like this is just a glorified autocross...