Are you a diesel maniac? Do you love the smell of rolling coal in the morning? Does the whine of a diesel turbo make your heart race? Then we may have the event for you. The fastest, strongest, and meanest diesels come together once a year in Indianapolis for a diesel only event known as “the Ultimate Callout Challenge! This all-out event pits driver against driver in drag racing, dyno runs, and the punishing sled pull to see who has the ultimate machine! Think you're up for the challenge? Tag along as Stacey takes you through this year’s event, on Gearz!