Brands Hatch Jonathan Palmer's MotorSport Vision company completed the purchase of Brands Hatch and the other Octagon venues (Cadwell Park, Oulton Park, and Snetterton). Palmer immediately implemented a programme of improvements to the venue, designed to heighten customer experiences both for spectators and competitors. 25 September 2005, the inaugural A1 Grand Prix of Nations was held at Brands Hatch. A1 Grand Prix was a single-seater one-make series where the drivers represented their nation, as opposed themselves or a team. The first race, an 18-lap Sprint saw Nelson Piquet, Jr. lead flag-to-flag to win for A1 Team Brazil, ahead of Alexandre Premat (France)
United States Auto Club Mans disaster and the death of Bill Vukovich at Indianapolis as contributing factors, both the SCCA and NASCAR were mentioned as its potential successor. Ultimately, USAC was formed by Indianapolis Motor Speedway owner Tony Hulman. It became the arbiter of rules, car design, and other matters for what it termed championship auto racing, the highest level of USAC racing. For a while there was a separate series of specifications for championship cars designed to be run on dirt, rather than paved, tracks. USAC's long history as an open-wheel racing sanctioning body continues today with the Silver Crown Series, National Sprint