If you've not heard about Bill, read this or check out this quick search. The short story is he took a $500 Craigslist BMW, swapped in an engine he had, put it all together in his mom's basement and finished the Mexico Round of the World Rally Championship where other professional teams hadn't. This guy is epic (I don't like using that word) - he lost his job and decided to take a year off to race. He's raced Pikes Peak, almost got into the X-Games and now has a Miller Welder sponsorship all with a beater '91 BMW.
Now I just heard a rumor floating that there might be a Score Sportsman Truck entry in his future . . .