A crown jewel and the final round of the In-Season Challenge had tempers flaring behind the wheel at the Brickyard 400. Go behind the scenes on Corey Heim and Carson Hocevar's beef on the way to Heim's second career win. While Ryan Blaney and Todd Gilliland battle for a million bucks, hear their reactions to how it all plays out in this edition of 'NASCAR Radioactive.' Subscribe to NASCAR on YouTube: nas.cr/youtube ---------- Follow NASCAR: Instagram instagram.com/nascar TikTok tiktok.com/@nascar X twitter.com/nascar Facebook facebook.com/NASCAR Discord discord.gg/nascar ---------- Shop for your favorite NASCAR gear, diecasts and more: nas.cr/store ---------- Visit NASCAR.com: nas.cr/nascar For more race day in-car cameras check out NASCAR Drive - nascar.com/drive Download the NASCAR Mobile App: nas.cr/mobile Weekend schedule for on-track action: nas.cr/weekend ---------- Play NASC...