Forrest Lucas, 70, is widely known for his sponsorship of the Indianapolis Colts’ Lucas Oil Stadium (home of the 2012 Super Bowl). But few fans know of his journey from long-haul trucker to oil-products producer to race team sponsor. In 1989 he launched Lucas Oil Products, which now sells nearly 200 items in 27 countries. Though Lucas won’t reveal his private company’s sales or profits, revenue is reportedly around $150 million. He recently sat down with Fortune to share his story.