Ive spoken with Craig Flango, who is heavily sponsored with his Mercury Cougar. Basically, he said the best way is to create a portfolio; online is preferred. Basically, give history of the car, modifications, pictures, etc. After thats completed, just burn it on a cd and send it to the marketing division of the specific company your interested in. Also, he said its nice to have something that stands out about your car to the company as to why they should sponsor your car, and not pitch your portfolio in the trash like probably most applicants. Check out
www.street-concepts.net to check out Craigs layout.