Building A Rail Buggy I Am Building A Baha Style Rail Buggy For Racing. How Do I Get Sponsors?

I am building a baha style rail buggy for racing. How do I get sponsors? - building a rail buggy

I have a complete picture, a professional mechanic and many volenteers. I need sponsors and all that is called. Goodyear, Budweiser, elelbrock ... and so on .... they all act as if I'm not good enough for them ... I have very professional on the phone and e-mail. I have over 5 years exp driving other peoples cars ... now try on your own, and I get a cold reception?
CAN ANYONE HELP ?????