Robert Kauffman are giving Nascar a high-octane boost,moonshine runners and car dealers who gave the motor sport its start. A record $3.5 billion in sponsorships will flow into U.S. motor sports in 2008. That’s attracting Kauffman, fund owner John Henry, who owns the Boston Red Sox; and George Gillett. They see an opportunity for more profit from applying financial expertise to mom-and-pop businesses. ` Nascar is the biggest U.S. racing league by sales and claims. Kauffman purchased half of Michael Waltrip Racing.