This week, host Michael Shelton sits down with 4-time Indianapolis 500 winner Helio Castroneves to talk about his career rejuvenation following his memorable victory in the Indy 500 back in May as well as returning to the Indianapolis Motor Speedway this weekend to drive on the road course for the Big Machine Spiked Coolers Grand Prix.You'll also hear from NASCAR standouts Austin Dillion and A.J. Allmendinger ahead of this weekend's NASCAR race on the Indy road course, while Shelton previews this weekend's other big races, including one of sprint car racing's most prestigious events, the 60th Annual Knoxville Nationals.