Dale Earnhardt Jr. sits down with longtime NASCAR crew chief Gary Nelson, who worked with legendary drivers like Ricky Rudd, Bobby Allison, and Geoff Bodine. In the first installment of this conversation, Gary dives into the intriguing world of NASCAR innovation.

If you raced in the 70s with a 100% legal car, you’d be out of business, and Nelson is here to prove it. He shares stories of finding ways around NASCAR’s scales, new innovations in aerodynamics, and how many of his cars looked a little “too good” to the inspectors. Nelson also dives into the early days of his career, discussing his relationship with Robert Gee, learning moments with Darrell Waltrip, and how he was directly responsible for Dale Earnhardt’s first win at Bristol.

Dale Jr and Gary also break down his give-and-take relationship with Bobby Allison, and what it took for the two of them to finally find success. It’s a conversation so good we had to break it into two parts.